redirect traffic to tunnel of one out of 2 network adapter

elios115

i am just a newbie here hopefully i ll be able to get help.
i have two network adapters on my computer.both wireless connecting to the same network.
i m a client of a vpn service using ovpn since i am in a country where almost everything is blocked.
the server side of the vpn redirects all client network traffic when connected.
how can i redirect the traffic of one of the two wireless adapters through the vpn tunnel without the other one.

update:
after some research i found that using
push route [ipaddress to skip] 255.255.255.0 gateway(which is the ip of my router)
eg push route 192.168.2.3 255.255.255.0 192.168.2.1

but its not working taking into consideration that 192.168.2.3 is the of the network that i dont want its traffic to be redirected the tunnel.
if the server side use push "redirect-gateway def1" will the upper push route override the server one?

elios115

here is my client config

client

#pull
dev tun

proto udp

hand-window 15

remote-random

remote xxx.xxx.xxx.xxx 1146

resolv-retry infinite

nobind
push "route 192.168.2.3 255.255.255.0 192.168.2.1"
push “dhcp-option DNS 192.168.2.1"

persist-key
persist-tun

ca ca.crt
cert client.crt
key client.key

ns-cert-type server

comp-lzo

verb 3

route-method exe
route-delay 2

maikcat

hi there,

first dont double post
https://forums.openvpn.net/topic9560.html

>i have two network adapters on my computer.both wireless connecting to the same network.

are you bonding together the 2 interfaces?

also remove the push directives from you client,
the server "pushes" options to clients not the other way around..

Michael.

elios115

hi there,

first nobody answered there that is why i repost it here.

Second thank you for you info. is there anyway that the client can override the server configuration to redirect one ip through the tunnel without the other?

regards,

maikcat

you can setup your client to ingore routes that server sends...

if i understand correctly..

Michael.

elios115

thank you for your reply
i think using route-nopull will allow the client to ignore the pushes from the server.
after ignoring, can the client redirect only specific ports or specific ip or MAC traffic (in case on multiple NIC on the client station) without any setup from the server side?
regards,

maikcat

can the client redirect only specific ports or specific ip or MAC traffic (in case on multiple NIC on the client station) without any setup from the server side?

this has nothing to do with openvpn itself
you need additional software (according your OS) to achieve some of the above,
f.e redirecting ports can be achieved with iptables in case you use linux.

Michael.

elios115

oh yeah thats wat i have been doing on my windows 7 workstation.
im using static routing command for this after using route-nopull in the openvpn client

route add <destination> <mask> <openvpn gateway> metricx

the problem is that the openvpn adapter doesnt have any default gateway when using ipconfig to figure it out, it s just emply, im not sure if i can use the dns server or dhcp sever ip of the openvpn connection as gateway.

one more thing, if i set the metric of my openvpn gateway to 2 and my default connection to 3, its not applying since the metric of my connection is always less by 1 of my openvpn gateway which means that it will go to 1 instead of 3 automatically.

thks for your help

maikcat

the problem is that the openvpn adapter doesnt have any default gateway when using ipconfig to figure it out, it s just emply, im not sure if i can use the dns server or dhcp sever ip of the openvpn connection as gateway.

for your vpn adapter to obtain default gateway the server must
push to you redirect gateway statement (which you deny by using route-nopull)
-or- add redirect-gateway def1 into your config.

Michael.

elios115

in summary:

wether i use nopull or not, the ipconfig /all shows an empty gateway.

in summary what am i doing?
-the server openvpn redirects all traffic, but since i dont need to redirect all traffic im using nopull to ignore the server pushes.
-with my openvpn connected, i try to use static windows routing..."
"route add destination mask gateway of the vpn(i got it from dyndns agent) metric IF
-im checking the static routes and it shows as required.
-im tracing the destination ip routed in the "route add" command, but it is routing through the my gateway not the vpn gateway.

ps:the vpn connection is on the same network adapter of the default gateway which means im using only 1 adapter in the whole process, in case it affects.

CAN ANYBODY TELL ME IF I AM DOING SOMETHING WRONG?

thank you