Hi all, this is a common problem that appears easily in searches , yet i can't seem to figure out what is wrong. Most results point to a problem with the firewall. I don't understand how to change The problem appears when my openvpn server (which sits behind a NAT at my house) has its external IP changed, since my house internet connection has a dynamic ip. SO, as soon as my external ip changes, my vpn clients can no longer connect to the server. It is a headache, because after a restart (of the openvpn server and perhaps the firewall as well) things usually are not corrected. After a few restarts though things will get working for a few days until my ip changes again. My server config is the following: [quote]cd /etc/openvpn proto udp port 32456 comp-lzo verb 1 log-append /var/log/openvpn/server.log status /var/log/openvpn/server-status.log daemon dev tun persist-tun persist-key server 192.168.26.0 255.255.255.0 ifconfig-pool-persist /var/log/openvpn/ipp.txt client-to-client client-config-dir ccd route-gateway 'dhcp' route 192.168.114.0 255.255.255.0 route 192.168.18.0 255.255.255.0 push "route 192.168.112.0 255.255.255.0 vpn_gateway" push "route 192.168.114.0 255.255.255.0" push "route 192.168.18.0 255.255.255.0" cipher BF-CBC ca keys/ca.crt dh keys/dh1024.pem cert keys/stardust.crt key keys/stardust.key crl-verify certs/crl.pem keepalive 20 120 user openvpn group openvpn max-clients 15 [/quote] and the client config is the following (same across all clients) [quote]client dev tun proto udp remote my.dyndns1.site 32456 remote mydyndns2.site 32456 float resolv-retry infinite nobind user nobody group nobody persist-key persist-tun ca /etc/openvpn/keys/ca.crt cert /etc/openvpn/keys/forge.crt key /etc/openvpn/keys/forge.key ns-cert-type server cipher BF-CBC comp-lzo verb 3 mute 10 keepalive 10 60 log-append /var/log/openvpn/client.log[/quote] on the server , the log files states the following () [quote] Mon Jul 13 17:29:43 2015 us=15365 x.x.x.x:39397 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity) Mon Jul 13 17:29:43 2015 us=15406 x.x.x.x:39397 TLS Error: TLS handshake failed .... ....(a few seconds pass by) .... Mon Jul 13 17:29:43 2015 us=15492 x.x.x.x:39397 SIGUSR1[soft,tls-error] received, client-instance restarting Mon Jul 13 17:29:44 2015 us=718669 MULTI: multi_create_instance called Mon Jul 13 17:29:44 2015 us=718735 x.x.x.x:47092 Re-using SSL/TLS context Mon Jul 13 17:29:44 2015 us=718770 x.x.x.x:47092 LZO compression initialized Mon Jul 13 17:29:44 2015 us=718856 x.x.x.x:47092 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ] Mon Jul 13 17:29:44 2015 us=718888 x.x.x.x:47092 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ] Mon Jul 13 17:29:44 2015 us=718932 x.x.x.x:47092 Local Options String: 'V4,dev-type tun,link-mtu 1542,tun-mtu 1500,proto UDPv4,comp-lzo,cipher BF-CBC,auth SH A1,keysize 128,key-method 2,tls-server' Mon Jul 13 17:29:44 2015 us=718948 x.x.x.x:47092 Expected Remote Options String: 'V4,dev-type tun,link-mtu 1542,tun-mtu 1500,proto UDPv4,comp-lzo,cipher BF-C BC,auth SHA1,keysize 128,key-method 2,tls-client' Mon Jul 13 17:29:44 2015 us=718974 x.x.x.x:47092 Local Options hash (VER=V4): '530fdded' Mon Jul 13 17:29:44 2015 us=718994 x.x.x.x:47092 Expected Remote Options hash (VER=V4): '41690919' Mon Jul 13 17:29:44 2015 us=719028 x.x.x.x:47092 TLS: Initial packet from x.x.x.x:47092, sid=a439532b 854729a0 [/quote] on the client , the log file states: [quote] Mon Jul 13 17:32:51 2015 us=341010 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Mon Jul 13 17:32:51 2015 us=341263 Re-using SSL/TLS context Mon Jul 13 17:32:51 2015 us=341309 LZO compression initialized Mon Jul 13 17:32:51 2015 us=341451 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ] Mon Jul 13 17:32:51 2015 us=341526 Socket Buffers: R=[229376->131072] S=[229376->131072] Mon Jul 13 17:32:51 2015 us=510459 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ] Mon Jul 13 17:32:51 2015 us=510614 Local Options String: 'V4,dev-type tun,link-mtu 1542,tun-mtu 1500,proto UDPv4,comp-lzo,cipher BF-CBC,auth SHA1,keysize 128 ,key-method 2,tls-client' Mon Jul 13 17:32:51 2015 us=510642 Expected Remote Options String: 'V4,dev-type tun,link-mtu 1542,tun-mtu 1500,proto UDPv4,comp-lzo,cipher BF-CBC,auth SHA1,k eysize 128,key-method 2,tls-server' Mon Jul 13 17:32:51 2015 us=510692 Local Options hash (VER=V4): '41690919' Mon Jul 13 17:32:51 2015 us=510733 Expected Remote Options hash (VER=V4): '530fdded' Mon Jul 13 17:32:51 2015 us=510771 UDPv4 link local: [undef] Mon Jul 13 17:32:51 2015 us=510806 UDPv4 link remote: [AF_INET]x.x.x.x:32456 .... ....(a few secs pass by) .... Mon Jul 13 17:32:49 2015 us=340411 [UNDEF] Inactivity timeout (--ping-restart), restarting Mon Jul 13 17:32:49 2015 us=340678 TCP/UDP: Closing socket Mon Jul 13 17:32:49 2015 us=340752 SIGUSR1[soft,ping-restart] received, process restarting Mon Jul 13 17:32:49 2015 us=340792 Restart pause, 2 second(s) [/quote] do you see anything wrong with my configs? My guess is that the client firewalls do no allow ping-responses to reach them , once the ip of the server has changed (so all stateful ESTABLISH , RELATED connections no longer apply for the new server ip). Could this be the problem? what do I do in this case? Have you had this problem? How did you solve it? thank you!

does this file exists on your server crl-verify [b]certs/crl.pem[/b] ? comment out that option and test again

[quote="synthnassizer"]The problem appears when my openvpn server (which sits behind a NAT at my house) [u]has its external IP changed, since my house internet connection has a dynamic ip[/u]. SO, [u]as soon as my external ip changes, my vpn clients can no longer connect to the server[/u]. It is a headache, because after a restart (of the openvpn server and perhaps the firewall as well) things usually are not corrected. After a few restarts though things will get working for a few days until my ip changes again. [/quote]Have you setup a [url=https://en.wikipedia.org/wiki/Dynamic_DNS#DDNS_for_Internet_access_devices]dynamic domain name[/url] ?

@Titex the crl.pem file exists. Commenting out and restarting the server did not solve the problem @Traffic. Yes of course I have a dyn dns service. In fact 2 of them from 2 different providers (no-ip and dtdns). The client has 2 "remote" clauses and they are both FQDN from these 2 dyndns providers.

[quote="synthnassizer"]I have a dyn dns service. In fact 2 of them from 2 different providers[/quote]how often do they update ? Also, do you have anything [i]unusual [/i]in your client CCD file ?

well one of the providers takes about 2-3 minutes to propagate the changes across DNS servers around the globe the other one takes 30-40 minutes. I have notified them and they are looking into it.. in ccd I typically assign "static" ips to connecting clients. For example [quote]ifconfig-push 192.168.26.42 192.168.26.41[/quote] on occasions I push the local DNS server as well [quote]push "dhcp-option DNS 192.168.112.112"[/quote] That's about it.

What versions of openvpn are you using .. server & client ? Also, the problem you describe [u]appears[/u] to be down to DNS update/resolving/cache ... this is fairly normal behavior and it comes down to how your DNS solution is setup. Other notes:[quote="synthnassizer"]on the client , the log file states: Quote: [u]Mon Jul 13 [b]17:32:51[/b][/u] 2015 us=510806 UDPv4 link remote: [AF_INET]x.x.x.x:32456 .... ....(a few secs pass by) .... [u]Mon Jul 13 [b]17:32:49[/b][/u] 2015 us=340411 [UNDEF] Inactivity timeout (--ping-restart), restarting[/quote]Looks like your clock is running [i]backwards [/i] :ugeek:

lol indeed, I just swapped the messages to make some sequential sense in the snippet that I copied. really the inactivity part comes after every waiting stage.. I just copied the previous inactivity msg and pasted it after the following link remote statement. Rest assured I have not invented a time machine :D ok versions server is openvpn-2.2.2-x86_64-1 (running on slackware 14.0) clients vary: openvpn-2.1.4-i486-2 (running on another slackware 13.37) openvpn-2.2.2-x86_64-1 (running on another slackware 14.0) 2.2.1-8+deb7u3 (running on debian 7) 2.3.2-7ubuntu3.1 (running on xubuntu 14.04) 3.0.3core (?) (running on android phone) To be honest now that you made me look into versions , I will say that the same version client, tends to connect when none of the others manage to connect. Hmmm I never heard/saw/thought that openvpn could be versions-incompatible. and perhaps it is not the openvpn itself but the ssl. could this be it?

[quote="synthnassizer"]Hmmm I never heard/saw/thought that openvpn could be versions-incompatible. [/quote]OpenVPN is definitely sensitive to version incompatibilities .. but It will try to warn you in the log if serious incosistencies are detected. OpenVPN is in constant, active development and sometimes things go wrong. I highly recommend you try to get your versions inline and up-to-date. [quote="synthnassizer"]and perhaps it is not the openvpn itself but the ssl. could this be it?[/quote]OpenSSL versions could also [i]theoretically [/i]cause problems .. but again, I think the errors would reflect if openssl is at fault. Re-iterating:[quote="Traffic"]Also, the problem you describe [u]appears[/u] to be down to DNS update/resolving/cache ... this is fairly normal behavior and it comes down to how your DNS solution is setup.[/quote]

could you elaborate on the last bit? I am not sure how the 2 minute DNS propagation would affect openvpn..

[quote="synthnassizer"]as soon as my external ip changes, my vpn clients can no longer connect to the server. It is a headache, because after a restart (of the openvpn server and perhaps the firewall as well) things usually are not corrected. [u]After a few restarts though things will get working for a few days until my ip changes[/u] again. [/quote]Restarting your server has no effect on the problem .. you need to ensure your [b]DDNS client[/b] updates your DDNS name.

TLS Error: Handshake failed.Server is behind NAT on dyn ip

Traffic

synthnassizer wroteRemoving the firewall makes the client connect immediately.

two birds with one stone ...

The iptables rules required by OpenVPN are clearly documented :geek:

synthnassizer

The connection stalls on startup when using a proto udpconfiguration, the server log file shows this line:

TLS: Initial packet from x.x.x.x:x, sid=xxxxxxxx xxxxxxxx

however the client log does not show an equivalent line.

Solution: You have a one-way connection from client to server. The server to client direction is blocked by a firewall, usually on the client side. The firewall can either be (a) a personal software firewall running on the client, or (b) the NAT router gateway for the client. Modify the firewall to allow returning UDP packets from the server to reach the client..

this is a vague explanation. The ESTABLISHED, RELATED clause does exactly that - a packet leaves the client and an "allow" rule is setup to be able to receive the packets back.. but it is not enough, because the server ip changes.

closing the firewall on the client is out of the question.

Have I missed something else in the link you provided ? There must be something else that can be done. perhaps setup an "established, related" rule only based on the ip of the other party (and not on the combination of ip+port) ?

Traffic

You have already posted partial details of your firewall rules and they are hideously complicated !

You have also clearly stated that disabling your firewall allows the connection to work .: it is almost guaranteed to be a problem with your firewall ...

I suggest you run a packet sniffer on client and server and trace the path the packets take across your network. Somewhere, I suspect, the server packet is being NATted to another port (incorrectly).

If you cannot find the source of the problem then you will have to rebuild your firewall rules from scratch and learn what you did wrong.

synthnassizer

Somewhere, I suspect, the server packet is being NATted to another port (incorrectly)

OK this finally clicked in me. Bingo.
I did not need to run a packet sniffer but stating it like that made sense to look into something I setup a few months back.
I altered the nat table of the firewall on the server to redirect traffic on the openvpn server to the transparent proxy (which is also running on the same machine). The transparent proxy was serving the local network but I had decided to take it one step further and serve the users of the same pc too (all but root).

After alot of searching (and trying to make sense with this map) I had come up with these rules:

$IPT -A OUTPUT -t nat -p TCP --dport 80 -m owner --uid-owner root -j ACCEPT #accept root request, but re
direct all other local requests below
$IPT -A OUTPUT -t nat -p TCP --dport 80 -m owner --uid-owner squid -j ACCEPT #accept squid request, but redirect all other local requests below
$IPT -A OUTPUT -t nat -p TCP --dport 80 -j REDIRECT --to-ports 3128 #TRANSP PROXY for local browsers

$IPT -t nat -A PREROUTING -p tcp -i $LO_IFACE --destination-port 80 -j REDIRECT --to-ports 3128 #TRANSP PROXY for local browsers
$IPT -t nat -A PREROUTING -p tcp -i $LOCAL_IFACE --destination-port 80 -j REDIRECT --to-ports 3128 #TRANSP PROXY

as you can see the 4x top lines (in bold) are related to redirecting http traffic through squid proxy (running as transparent proxy). I avoid redirection for users root and squid, but I do NAT redirection for packets originating from other users. I did expect only packets heading towards a website (because of the --destination port 80) to be intercepted here. and things like openvpn traffic and other stuff NOT to be affected.

Perhaps you could shed some light as to why this did not work, but for now these 4 lines are commented out (only the 5th line is in operation, which redirects intranet traffic to the transparent proxy) and openvpn works fine. I'll wait until the dynamic ip changes to make sure things are ok - but it seems they will be.

Thank you!

PS: this is out of openvpn scope, but if you can spot my mistake in firewall NAT redirecting I would appreciate if you could point it out. I'll definitely try to re-enable these lines and run them with a packet sniffer to see if i'll be able to understand what is going on.

synthnassizer

well, close but no cigar.

Unfortunately all that I said above about solving the problem did not help. Dynamic ip changed again and currently the same problem exists. I am looking into my NAT entries all the way between server and client:

on the server :

cat /etc/rc.d/rc.firewall | egrep -v '^(#|$)' | grep "\-t nat"

gives:

root@stargaze:~# cat /etc/rc.d/rc.firewall | egrep -v '^(#|$)' | grep "\-t nat"

$IPT -t nat -A PREROUTING -p tcp -i $LOCAL_IFACE --destination-port 80 -j REDIRECT --to-ports 3128 #TRANSP PROXY
$IPT -t nat -A POSTROUTING -o $INET_IFACE -j MASQUERADE

on the client the same command:

$IPT -t nat -A POSTROUTING -o $INET_IFACE -j MASQUERADE

again one more tcpdump of a TLS negotiation:
on client

15:07:43.028277 IP 192.168.233.165.37073 > server_ip.32456: UDP, length 14
15:07:43.064518 IP server_ip.29199 > 192.168.233.165.37073: UDP, length 22

and on the server

15:07:43.046535 IP client_ip.15312 > 192.168.231.165.32456: UDP, length 14
15:07:43.046618 IP 192.168.231.165.32456 > client_ip.15312: UDP, length 22

this topographically looks like this:

      client         <--> modem of client <--i-n-t-e-r-n-e-t--> modem of server <-->       server
192.168.233.165       192.168.233.117                               192.168.231.117       192.168.231.165.

sorted by time , an open vpn ping between a client and the server goes like this :

synthnassizer

(continuing from above post)

sorted by time , an openvpn ping between a client and the server goes like this :

[client] 15:07:43.028277 IP 192.168.233.165.37073 > server_ip.32456: UDP, length 14
[server] 15:07:43.046535 IP client_ip.15312 > 192.168.231.165.32456: UDP, length 14
[server] 15:07:43.046618 IP 192.168.231.165.32456 > client_ip.15312: UDP, length 22
[client] 15:07:43.064518 IP server_ip.29199 > 192.168.233.165.37073: UDP, length 22

SO if I read that correctly

1) the client sends out a packet from port port 37073 to the server openvpn port (32456)
2) in this step the packet passes through the client's modem, then through the internet and then through the server's modem.
3) then the server receives this packet on a different port (15312) than the originating one. destination is 32456 as expected though.
4) the server responds correctly from the port 32456 and with destination port the one is received the packet from (15312). The response packet is on its way again towards the client.
5) the packet is again going through the server modem, internet and client modem
6) the packet seems to arrive at the client on port on which this communication attempt originated (37073), but it does not seem to be coming from the port 32456. instead , somewhere in step 5 the source port was changed to 29199.
7) this source port 29199 is stated in no firewall rule and so the client firewall rule drops this packet.

Is it correct to assume that in step 2) and most importantly 5) some NAT is happening in the modems, because of the source port change of the packet? Or should I stick to the assumption that the problem lies in my firewalls somewhere?

I mean I know you mentioned this is a NAT problem, but looking into the server and client firewall NAT tables I cannot pin point the error from my custom firewalls.

If I assume that I have messed something up in my custom server and client firewalls (entirely possible), what netfilter commands should I look for that alter the source port of a packet?

As far as modems are concerned, let me state that in my server modem's config webpage, the firewall and SPI are disabled, no NAT rule has been set, and only a DMZ host has been setup so that all internet traffic is forwarded to the server's firewall. On the client side modem settings are exactly the same.

Is this packet sniffing with tcpdump enough ? You mentioned to do packet sniffing both in server and client, but I do not know if this is what you had in mind or you had something else. I wish I could run tcpdump command on the modems as well but I do not have ssh connection to them. Could I use tcpdump with some other command in order to get more info as to where the source port is changed?

Thank you in advance for your help.

synthnassizer

ok for extra help (hopefully) I got tcpdumps from the server and client. The tcpdump I found on an openvpn AS doc website
https://docs.openvpn.net/how-to-tutorialsguides/administration/troubleshooting-openvpn-connectivity-issues/
The difference with previous tcpdumps is that I have appended host <....> or icmp or arp to the command .

Basically, After I stopped openvpn services (in both server and client), I waited a few seconds and then
1) started tcpdump,
2) started openvpn server and finally,
3) started openvpn client.

on the 1st attempt I got the same failure (TLS error):

server

18:16:44.874275 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 14
18:16:44.875204 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 26
18:16:44.914902 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:44.916847 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 108
18:16:44.919688 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 126
18:16:44.919707 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:44.919721 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:44.919735 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:44.959690 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:44.959732 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:44.960653 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:44.960688 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:44.962885 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:44.962918 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:44.965118 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:44.965150 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:44.999359 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:44.999392 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:45.005278 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:45.005314 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:45.011666 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:45.011698 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:45.020084 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:45.020117 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:45.038537 IP 46.246.252.11.dsl.dyn.forthnet.gr.16687 > 192.168.231.165.32386: UDP, length 22
18:16:45.038572 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:47.235044 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:48.333218 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:49.431389 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:50.529550 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:51.627711 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:52.725885 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:53.824140 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:54.922339 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:16:59.503129 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:17:00.648392 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:17:01.793620 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114
18:17:02.938892 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16687: UDP, length 114

and client

18:16:44.856191 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 14
18:16:44.896839 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 26
18:16:44.897046 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:44.897119 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 108
18:16:44.941455 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 126
18:16:44.941608 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:44.943383 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:44.943442 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:44.945375 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:44.945429 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:44.948065 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:44.948118 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:44.980882 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:44.981025 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:44.987476 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:44.987586 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:44.993935 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:44.994041 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:45.002064 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:45.002170 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:45.020070 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:45.020238 IP 192.168.233.165.46556 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:16:45.027153 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:45.027198 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:45.034349 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:45.034380 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:45.040989 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:45.041007 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:45.059172 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:45.059188 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:47.255235 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:47.255265 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:48.354551 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:48.354574 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:49.453140 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:49.453160 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:50.549831 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:50.549856 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:51.648424 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:51.648447 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:52.746256 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:52.746283 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:53.845341 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:53.845364 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:54.943768 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:54.943791 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:16:59.524441 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:16:59.524467 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:17:00.668791 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:17:00.668822 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:17:01.814207 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:17:01.814281 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150
18:17:02.959317 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.46556: UDP, length 114
18:17:02.959342 IP 192.168.233.165 > adsl-238.79.107.43.tellas.gr: ICMP 192.168.233.165 udp port 46556 unreachable, length 150

now I stopped the client again.
waited for a moment , restarted it and this time it connected fine. (no TLS error this time and the connection was initialized properly)

server

18:19:05.652433 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 14
18:19:05.652849 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 26
18:19:05.693228 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.694518 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 108
18:19:05.696654 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 126
18:19:05.696670 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.696684 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.696697 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.737585 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.737666 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.740842 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.740881 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.744242 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.744278 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.748174 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.748206 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.779957 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.779990 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.783192 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.783224 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.789808 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.789840 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.798184 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.798217 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.819605 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.819640 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.826036 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.826068 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.833429 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.833460 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.839839 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.839871 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.858065 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.858101 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.866421 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.866453 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.871848 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.871880 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.881228 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.881261 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.896505 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.896536 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.904861 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.904892 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.918480 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.918515 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:05.923641 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.923673 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 102
18:19:05.936645 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.943321 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.956653 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:05.998800 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 126
18:19:05.998846 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.001484 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.001522 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.002712 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.002746 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.004945 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.004979 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.038182 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.038219 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.043117 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.043151 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.048791 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.048827 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.054976 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.055010 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.076130 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.076164 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.081803 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.081837 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.087968 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.088001 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.095853 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.095887 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.114795 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.114864 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.121205 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.121242 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.127370 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.127404 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.134046 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.134081 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.153726 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.153766 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.160874 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.161703 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.165831 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.165874 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.173224 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.174835 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.192400 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.192693 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.201014 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 17
18:19:06.201392 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 126
18:19:06.201406 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.201417 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.201428 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.243201 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.243236 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.246868 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.246908 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.250841 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.250871 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.254978 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.255007 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.281826 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.281854 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.288973 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.289006 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.296857 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.296886 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.303268 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.303301 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 60
18:19:06.321494 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.328642 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.335052 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.344718 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 126
18:19:06.344806 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.346909 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.346966 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.347892 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 114
18:19:06.347966 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:06.348834 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 28
18:19:06.349258 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 126
18:19:06.349272 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:06.349285 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 80
18:19:06.404784 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.409474 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:06.415126 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:08.490700 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 104
18:19:08.490920 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 22
18:19:08.490951 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:08.490962 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 114
18:19:08.490973 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 80
18:19:08.534479 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:08.537448 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:08.556454 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 22
18:19:28.734652 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 53
18:19:28.734756 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 53
18:19:38.748801 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 101
18:19:38.748972 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 101
18:19:38.790615 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 93
18:19:38.795450 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 109
18:19:38.834973 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 93
18:19:38.836447 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 109
18:19:38.836526 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 93
18:19:38.837435 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 469
18:19:38.884779 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 541
18:19:38.888424 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 93
18:19:38.923701 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 93
18:19:38.965079 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 173
18:19:38.965153 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 93
18:19:38.967971 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 373
18:19:39.030367 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 109
18:19:39.070387 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 93
18:19:39.109950 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 141
18:19:39.110021 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 93
18:19:39.110090 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 141
18:19:39.158978 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 157
18:19:39.159997 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 173
18:19:39.205794 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 189
18:19:39.205924 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 173
18:19:39.288572 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 93
18:19:40.376071 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 93
18:19:40.376647 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 93
18:19:40.417724 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 93
18:20:00.607290 IP 192.168.231.165.32386 > 46.246.252.11.dsl.dyn.forthnet.gr.16734: UDP, length 53
18:20:00.616852 IP 46.246.252.11.dsl.dyn.forthnet.gr.16734 > 192.168.231.165.32386: UDP, length 53

client

18:19:05.634379 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 14
18:19:05.674736 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 26
18:19:05.674995 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.675088 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 108
18:19:05.719066 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 126
18:19:05.719239 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.721292 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.721417 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.723489 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.723594 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.725773 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.725877 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.761216 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.761323 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.765422 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.765526 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.771359 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.771461 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.779918 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.780019 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.801145 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.801249 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.807749 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.807852 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.815152 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.815256 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.821122 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.821224 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.840032 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.840137 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.847446 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.847549 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.853881 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.853982 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.862216 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.862318 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.878959 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.879061 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.887101 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.887203 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.895022 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.896704 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.902362 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.902487 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.917899 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.918028 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.925558 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.925665 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.938830 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:05.939298 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:05.946965 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 102
18:19:05.979830 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 126
18:19:05.979917 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:05.979971 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:05.980021 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.018658 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.018766 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.024610 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.024708 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.030500 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.030595 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.035955 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.036061 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.057118 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.057215 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.063517 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.063612 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.068959 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.069056 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.076095 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.076189 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.095536 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.095630 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.101226 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.101320 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.108116 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.108213 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.115497 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.115590 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.134469 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.134562 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.141117 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.141210 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.147034 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.147126 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.153959 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.154057 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.173649 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.173742 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.183010 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.183104 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 17
18:19:06.187188 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.194588 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.214292 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.225388 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 126
18:19:06.225495 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.226881 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.226987 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.228367 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.228470 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.230338 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.230440 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.263555 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.263660 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.270522 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.270627 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.278144 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.278246 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.285011 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.285116 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.303228 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.303343 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.310357 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.310461 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.317300 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.317499 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.323236 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 60
18:19:06.323454 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 126
18:19:06.323507 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.323545 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 114
18:19:06.323581 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 28
18:19:06.366325 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.370504 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.379132 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:06.386764 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 126
18:19:06.386867 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.388969 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:06.389055 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:06.390228 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 80
18:19:06.390851 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:08.471261 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 104
18:19:08.512783 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 22
18:19:08.515465 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:08.515571 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:08.517424 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 114
18:19:08.517510 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:08.519157 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 80
18:19:08.529027 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 22
18:19:28.716398 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 53
18:19:28.754239 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 53
18:19:38.728599 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 101
18:19:38.771948 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 101
18:19:38.772146 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 93
18:19:38.815817 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 109
18:19:38.816014 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 93
18:19:38.816141 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 109
18:19:38.861133 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 93
18:19:38.861532 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 541
18:19:38.869838 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 469
18:19:38.870052 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 93
18:19:38.944715 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 93
18:19:38.944880 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 173
18:19:38.988022 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 93
18:19:38.996478 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 373
18:19:39.011419 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 109
18:19:39.090799 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 93
18:19:39.090958 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 141
18:19:39.133161 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 93
18:19:39.138840 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 141
18:19:39.139075 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 157
18:19:39.183184 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 173
18:19:39.183521 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 189
18:19:39.230009 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 173
18:19:39.269399 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 93
18:19:40.356712 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 93
18:19:40.398849 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 93
18:19:40.399018 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 93
18:20:00.598350 IP 192.168.233.165.48081 > adsl-238.79.107.43.tellas.gr.32386: UDP, length 53
18:20:00.626750 IP adsl-238.79.107.43.tellas.gr.32386 > 192.168.233.165.48081: UDP, length 53

So there is a pair of tcpdumps of a failed connections and a pair of successful once. I still fail to see where the problem lies....

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