Using CentOS 6 : Is it possible to restrict use of AirVPN to Firefox

sameenp565

Hello,

i am a new user and happily enjoying the great airvpn service

i am Using CentOS 6 :My question is ,is it possible to restrict use of AirVPN to Firefox ?

meaning i dont want to use VPN connection for other applications, i just want to use AirVPN with Firefox ?

is it possible and how

Thanks

InactiveUser

Certainly possible but not trivial, it's quite a bit of work. You would need

to add the option "route-nopull" to the openvpn config file (preventing openvpn to set a default route)
a separate user account (let's call it: vpnuser) to run Firefox etc. (through sudo or su)
iptables rules to mark vpnuser's packets
a bash script to create a route for vpnuser, executed whenever the tun0 interface goes up
disable reverse path filtering

An example of something like this can be found in this blog post but it's not tailored to CentOS.

Another (not very elegant, but much simpler) solution would be:

run OpenVPN on another box (could even be a lightweight virtual machine! Also, don't forget to firewall it against non-VPN traffic)
ssh into that box: "ssh -D 12345 user@the_other_box" (opening the local port 12345 as a SOCKS proxy)
configure Firefox to use the SOCKS5 proxy at 127.0.0.1:12345 (sending Firefox' traffic to the other box which is running OpenVPN)

rainmakerraw

Another reason it would be great if AirVPN offered HTTP and SOCKS5 proxies! So much simpler.

Recommended Posts