Arch Linux

BasT

Member

Registered: 2010-08-28

Posts: 117

OpenVPN to not be used by default

I have setup an OpenVPN connection, which by default redirects all traffic through the VPN tunnel.

However I would to like the VPN to be ignored by default. Only applications that are set to specifically use the "tun0" network device should use VPN. I believe I have to change the routes to archive this but I haven't figured out how.

Before the VPN connection is started the route list looks like this:

$ ip route list
default via 192.168.1.1 dev eno1 proto static metric 100 
192.168.1.0/24 dev eno1 proto kernel scope link src 192.168.1.26 metric 100 

After starting the VPN (which pulls routes from the VPN server):

$ ip route list
0.0.0.0/1 via 10.8.8.1 dev tun0 
default via 192.168.1.1 dev eno1 proto static metric 100 
10.8.8.0/24 dev tun0 proto kernel scope link src 10.8.8.12 
128.0.0.0/1 via 10.8.8.1 dev tun0 
184.145.66.233 via 192.168.1.1 dev eno1 
192.168.1.0/24 dev eno1 proto kernel scope link src 192.168.1.26 metric 100 

Starting the VPN client with

# openvpn --route-nopull --config /etc/openvpn/client/client.conf

causes DNS to no longer work. But otherwise it might be what I need.

$ ip route list
default via 192.168.1.1 dev eno1 proto static metric 100 
10.8.8.0/24 dev tun0 proto kernel scope link src 10.8.8.12 
192.168.1.0/24 dev eno1 proto kernel scope link src 192.168.1.26 metric 100

Last edited by BasT (2017-11-13 01:58:17)

x33a

Forum Fellow

Registered: 2009-08-15

Posts: 4,587

Re: OpenVPN to not be used by default

AFAIK, you need to specifically instruct OpenVPN to route all traffic through the tunnel. See https://openvpn.net/index.php/open-sour … l#redirect

You probably have these lines in your server configuration.

BasT

Member

Registered: 2010-08-28

Posts: 117

Re: OpenVPN to not be used by default

The server (which is not configured by me) has these lines. That's the problem. I want to configure the client to *not* use the tunnel by default, contrary to the server's pushed default settings.

Last edited by BasT (2017-11-13 09:08:19)

lo1

Member

Registered: 2017-09-25

Posts: 584

Re: OpenVPN to not be used by default

https://bbs.archlinux.org/viewtopic.php?id=231016 this has been dealed with in this topic.

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