Hi I've already use openVPN for a single user and I've never found any problem with that software. After some years a friend wanted to join with me the vpn service and the free license allows 2 users, so why not? Now that's the situation I cannot resolve: my friend is under an HTTP Proxy server and he cannot establish a connection with the VPN server (no problems for me). If he try to connect with another connection ("free") the client [u]can[/u] establish the connection (at the same time I [u]can[/u] connect too). So I don't think it's a server's problem but something to change in the client. What can be done? I tried for hours but I'm not an expert. We are both using OpenVPN Connect 2.0.7 and we downloaded it from the server after the login in the openVPN web interface. Then the clients have the configuration [i]embedded[/i] within. Thank you for the precious help

Connect to OpenVPN Server behind a HTTP Proxy

Firaja

Hi
I've already use openVPN for a single user and I've never found any problem with that software. After some years a friend wanted to join with me the vpn service and the free license allows 2 users, so why not?
Now that's the situation I cannot resolve: my friend is under an HTTP Proxy server and he cannot establish a connection with the VPN server (no problems for me). If he try to connect with another connection ("free") the client can establish the connection (at the same time I can connect too).

So I don't think it's a server's problem but something to change in the client.

What can be done? I tried for hours but I'm not an expert.

We are both using OpenVPN Connect 2.0.7 and we downloaded it from the server after the login in the openVPN web interface. Then the clients have the configuration embedded within.

Thank you for the precious help

rsenio

I dont suppose you even bothered to look up the answer? Took me all of 2 seconds to find the help regarding your question

https://openvpn.net/index.php/open-source/documentation/howto.html#http

Firaja

Thank you for the very smart answer by @rsenio. Apparently he thinks he's the only one he can reach the HOWTO section. But I'm not here for that.
I found that the client version of my friend doesn't work and reinstalling an older version worked fine with its configuration.
Finally he could connect to the server but openDNS still block him some domain...I thought openVPN ddidn't route all the traffic, like web traffic (that's was new for me).
So I added these to the server configuration file

push "redirect-gateway def1"
push "dhcp-option DNS 10.8.0.1"

and added to iptables

iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE

I don't need to add nothing to the client?

Firaja

Every time OpenDNS blocks the connection! How can it be bypassed???