Weirdest problem ever. Basically random connects to vpn.

kornloud2

So I switched from an ssh tunnel to this open vpn and it has more problems then I have ever encountered in a program in my life.

I basically connect using my server info with a correct user and pass but heres the catch.

WITHOUT CHANGING ANYTHING, I have to connect more than 10 times and hopefully I can get connected to my vpn all day til I take it off.

The thing is, I have to keep spamming connect until I can get signed in with my vpn ip.

I always have to sit at logging in and it seems like its random.

Anyway to fix this so I can just login once and I'm in instead of logging in 20 times?

config -

client
dev tun
proto udp
remote nyc.tunnelr.com
remote-cert-tls server
port 1194
nobind
comp-lzo
persist-key
persist-tun
auth-user-pass
ca ./nyc-tunnelr.ca
cert ./nyc-tunnelr.crt
key ./nyc-tunnelr.key
verb 5
ping 15
ping-restart 30

kornloud2

I also get this sometimes when I actually can connect.

Server IP: %S
Traffic: 36.5 KB in, 20.9 KB out
Connected: Sunday, April 21, 2013 10:06:10 PM

What is with that server ip? What does %S mean? lol

mwandelaar

Without additional logging from either server and client i cannot give you a specific answer.
So please post logging from client and server when the connection failed.

On the other hand, you where using ssh (which is actually a TCP-connection) and you switched to openvpn, UDP-based.
I still have a similair issue with one of my vpn-servers, based on a very cheap vps. I'm not able to connect to this vpn-server in a normal way, using UDP. So i switched to TCP and it's running perfectly stable.
When using that specific VPS as a client in another vpn, i have the same problem. Switching this to tcp again solves the problem.

Running tcpdump + wireshark on the connection, reveals quite a lot of packetloss on the udp-connection. This can cause severe trouble on a openvpn-connection.
I think this has all to do with the network of the vps-provider, as i cannot find any errors on the vps-machine itself.

Maybe you can test running openvpn in tcp-mode and see if that helps.

kornloud2

mwandelaar wroteWithout additional logging from either server and client i cannot give you a specific answer.
So please post logging from client and server when the connection failed.

On the other hand, you where using ssh (which is actually a TCP-connection) and you switched to openvpn, UDP-based.
I still have a similair issue with one of my vpn-servers, based on a very cheap vps. I'm not able to connect to this vpn-server in a normal way, using UDP. So i switched to TCP and it's running perfectly stable.
When using that specific VPS as a client in another vpn, i have the same problem. Switching this to tcp again solves the problem.

Running tcpdump + wireshark on the connection, reveals quite a lot of packetloss on the udp-connection. This can cause severe trouble on a openvpn-connection.
I think this has all to do with the network of the vps-provider, as i cannot find any errors on the vps-machine itself.

Maybe you can test running openvpn in tcp-mode and see if that helps.

How do I find the logs and information you need?

kornloud2

mwandelaar wroteWithout additional logging from either server and client i cannot give you a specific answer.
So please post logging from client and server when the connection failed.

On the other hand, you where using ssh (which is actually a TCP-connection) and you switched to openvpn, UDP-based.
I still have a similair issue with one of my vpn-servers, based on a very cheap vps. I'm not able to connect to this vpn-server in a normal way, using UDP. So i switched to TCP and it's running perfectly stable.
When using that specific VPS as a client in another vpn, i have the same problem. Switching this to tcp again solves the problem.

Running tcpdump + wireshark on the connection, reveals quite a lot of packetloss on the udp-connection. This can cause severe trouble on a openvpn-connection.
I think this has all to do with the network of the vps-provider, as i cannot find any errors on the vps-machine itself.

Maybe you can test running openvpn in tcp-mode and see if that helps.

It's actually working, for now. 🙂

Thanks sir.

mwandelaar

kornloud2 wrote It's actually working, for now. 🙂

Thanks sir.

You're welcome!

kornloud2 wroteHow do I find the logs and information you need?

In the server this logging is in your syslog, so probably in /var/log/messages or /var/log/syslog or /var/log/daemon , depending on the taste of linux you are running.
In the client it's probably just in the terminal-window where openvpn is running. Or also in the systemlog, al depends on the client-OS and openvpn-client-software.