VPN stop browsing after few minutes

[deleted]

Hi there,

I have setup and openvpn TCP/UDP protocol successfully but my issue is that when i connect the client to VPN it get connected successfully but after few minutes my internet stop working, whereas my VPN is connected fine.
I even cannot ping the gateway IP of VPN server it completely disconnect me to internet.

Here is my configuration of SERVER:

port 1194
proto udp
dev tun
ca ca.crt
cert server.crt
dh dh2048.pem
topology subnet
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "redirect-gateway def1 bypass-dhcp"
push "dhcp-option DNS 8.8.8.8"
push "dhcp-option DNS 8.8.4.4"
keepalive 10 120
tls-crypt myvpn.tlsauth
cipher AES-256-CBC
user nobody
group nobody
persist-key
persist-tun
status openvpn-status.log
log         openvpn.log
log-append  openvpn.log
verb 3
explicit-exit-notify 1

My client config

client
tls-client
ca ca.crt
cert client.crt
key client.key
tls-crypt myvpn.tlsauth
;remote-cert-eku "TLS Web Client Authentication"
proto udp
remote xxx.xxx.xxx.xxx 1194 udp
dev tun
topology subnet
pull
user nobody
group nobody

does this issue has something related to ISP provider?

Please help me in this situation i need to fix it

thanks in advnace.

TinCanTech

Set --verb 4 and see your logs for problems.

[deleted]

Hi,

Thanks for you reponse.

I have set verbs 4 in server config but it only shows the logs while connecting to server but nothing show while browsing

http://i.prntscr.com/hff9GF0ASOqSQ1HMC6NcBQ.png

please see the logs

TinCanTech

sohaibk wrote i connect the client to VPN it get connected successfully but after few minutes my internet stop working

If the VPN is dropped then it will be logged, wait for the log to update.

[deleted]

VPN does not drop, it keep the vpn connected but we cannot browse anything neither we can ping anything.

TinCanTech

Then it is not openvpn at fault.

Either your server is doing something to change it's network configuration or somebody outside is blocking you.

[deleted]

what could be the possible reason? as internet works fine right after connecting VPN, but after few minutes it stop working, but the VPN is connected.

Is there anything related to Encrption or something? or anything related to ISP?

TinCanTech

Need to see your logs ..

https://forums.openvpn.net/viewtopic.php?f=30&t=22603#p68963

300000

You need IPforward and NAT at your server. at the moment it only can ping 10.8.0.1 only.

open terminal and type
sudo su

/proc/sys/net/ipv4/ip_forward =1

this make IPforward then

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

this is NAT so client can find the way get out to internet.

[deleted]

Hi,

Thanks for your reponse,

I have already set this, but the problem is when i connect the VPN it works find just for few minut or sometime few seconds, i can ping gateway I can ping 8.8.8.8 and other Internet IP, but after few seconds it stop everything, i cannot ping gateway as well 10.8.0.1

but the status of my VPN is connected

300000

You need look at log to see what happened after connected. Something is wrong so it stop working. Without log nobody know why.

[deleted]

300000 wrote You need look at log to see what happened after connected. Something is wrong so it stop working. Without log nobody know why.

http://i.prntscr.com/hff9GF0ASOqSQ1HMC6NcBQ.png

this is my server logs, it does not log anything once my internet stop working.

i have tested this on other PC as well, same result

TinCanTech

What sort of machine is your server and where is it ?

300000

that log show nothing at all . event not full log so how do people know what is wrong with?

TinCanTech

300000 wrote that log show nothing at all

Because it is not openvpn going wrong, it is either his server or ISP doing the block.

[deleted]

TinCanTech wrote What sort of machine is your server and where is it ?

I have installed server on Centos7
the machine is hosted on cloud in Netharland

[deleted]

TinCanTech wrote
300000 wrote that log show nothing at all
Because it is not openvpn going wrong, it is either his server or ISP doing the block.

I know this log does not show anything, but the situation is it does not disconenct the VPN, it only stopped me to access internet. i can only ping the Main IP of server on which i conencted the VPN, i cannot even ping the VPN gateway IP 10.8.0.1