OpenVPN Support Forum

Posted: **Thu Nov 03, 2011 11:52 am**

Hi,

I have a few mikrotik routers connected without problems, but my windows client gets disconnected every 5 minutes the connection is lost and it reconnects again, or if i try to transfer a file to the server it disconnects and reconnects many times.

I have the client in verb5 and here is the log file

Thu Nov 03 11:33:29 2011 Initialization Sequence Completed
Thu Nov 03 11:36:30 2011 Connection reset, restarting [-1]
Thu Nov 03 11:36:30 2011 TCP/UDP: Closing socket
Thu Nov 03 11:36:30 2011 SIGUSR1[soft,connection-reset] received, process restarting
Thu Nov 03 11:36:35 2011 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Thu Nov 03 11:36:35 2011 NOTE: OpenVPNAS 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Thu Nov 03 11:36:35 2011 Re-using SSL/TLS context
Thu Nov 03 11:36:35 2011 Control Channel MTU parms [ L:1543 D:140 XX:40 XX:0 ET:0 EL:0 ]
Thu Nov 03 11:36:35 2011 Data Channel MTU parms [ L:1543 D:1450 XX:43 XX:4 ET:0 EL:0 ]
Thu Nov 03 11:36:35 2011 Local Options hash (VER=V4): 'db02a8f8'
Thu Nov 03 11:36:35 2011 Expected Remote Options hash (VER=V4): '7e068940'
Thu Nov 03 11:36:35 2011 Attempting to establish TCP connection with X.X.XX.XX:21

Client Config

client
proto tcp
dev tun
ca ca.crt
dh dh2048.pem
cert xxxxxxxxxx.crt
key xxxxxxxxxxxxx.key
remote xxxxxxxxxxxx 21
cipher BF-CBC
verb 5
mute 20
keepalive 10 120
persist-key
persist-tun
float
resolv-retry infinite
nobind

Openvpn config

port 21
proto tcp
dev tun

ca keys/xxxx/ca.crt
cert keys/xxxxxxx.crt
key keys/xxxxxxxxn.key
dh keys/xxxxxxx/dh2048.pem

server 172.16.100.0 255.255.255.0

client-config-dir /etc/openvpn/servers/OVPN-xxxxxxxx/ccd
ccd-exclusive

client-to-client

persist-key
persist-tun

crl-verify keys/xxxxxx/crl.pem

#ifconfig-pool-persist ipp.txt
cipher BF-CBC

keepalive 10 120

user nobody
group adm

status openvpn-status.log
log-append openvpn.log
verb 3
management localhost 7505

Thanks

Posted: **Fri Nov 04, 2011 7:39 am**

How the client is connected to internet? May be some router or firewall interferes.

Posted: **Fri Nov 04, 2011 10:01 am**

Mimiko wrote:How the client is connected to internet? May be some router or firewall interferes.

I have tried in a few different locations, and with different internet connections, firewall is disabled.

Every time that i connect to the ftp server under vpn and try to send a file the connection starts reconnecting instantly.

Posted: **Fri Nov 04, 2011 11:46 am**

Try another ftp client, for example built in windows.
Do a repair of the system.
Reinstall OpenVPN.
Check for malicious programs.

Posted: **Fri Nov 04, 2011 12:59 pm**

Mimiko wrote:Try another ftp client, for example built in windows.
Do a repair of the system.
Reinstall OpenVPN.
Check for malicious programs.

Thanks,

I am going also try in another computer with the same certificates.

I´ll give feedback later.

Posted: **Fri Nov 04, 2011 7:34 pm**

Hi,

I have tried in other laptop and the problem persist, after a while or if i upload any file to server i get the vpn disconnected and reconected like a loop.

I also tried to login with my android phone and could not ping any ip addresses, and if i connect to other openvpn server i am able to ping without problems.

It seems like something in the server config is not correct or is missing.

Any help?

Posted: **Sun Nov 06, 2011 8:46 am**

If you think about server, then search interfering devices that drops connection on traffic. Some firewall, hidden proxy, traffic shaipping programs.

OpenVPN Support Forum

OVPN Windows Client keeps disconnecting and reconnecting

OVPN Windows Client keeps disconnecting and reconnecting

Re: OVPN Windows Client keeps disconnecting and reconnecting

Re: OVPN Windows Client keeps disconnecting and reconnecting

Re: OVPN Windows Client keeps disconnecting and reconnecting

Re: OVPN Windows Client keeps disconnecting and reconnecting

Re: OVPN Windows Client keeps disconnecting and reconnecting

Re: OVPN Windows Client keeps disconnecting and reconnecting