[SOLVED] how to connect eth0 to lan and wlan0 to the internet on a different subnet

manuelvartanian · 04-05-2017, 01:27 AM

Hello there,
i have installed Kali Linux on a lab environment and i cannot figure out 2 things.

1.how to connect eth0 to a LAN and wlan0 to the internet on a different subnet. i need them both to work in the same time. seems eth0 is taking precedence on wlan0.
eth0 is not connected to the Internet but wlan0 is whenever i connect eth0 the INTERNET is disconnected.

2.how can i configure packet forwarding in a such case with routing table.

Keith Hedger · 04-05-2017, 06:49 AM

this is not really an LFS question please ask a mod to move it to a more appropriate forum

michaelk · 04-05-2017, 08:32 AM

Moved: This thread is more suitable in linux-networking and has been moved accordingly to help your thread/question get the exposure it deserves.

wpeckham · 04-05-2017, 08:53 AM

Quote:

Originally Posted by manuelvartanian

Hello there,
i have installed Kali Linux on a lab environment and i cannot figure out 2 things.

1.how to connect eth0 to a LAN and wlan0 to the internet on a different subnet. i need them both to work in the same time. seems eth0 is taking precedence on wlan0.
eth0 is not connected to the Internet but wlan0 is whenever i connect eth0 the INTERNET is disconnected.

2.how can i configure packet forwarding in a such case with routing table.

There can be only ONE default route, so whichever leads more directly to the default router will always act as your primary interface. You can add specific routes to direct some subset of all external network traffic to a different device, but that does not sound like what you would want. What DO you want? What is the purpose of activating two interfaces at the same time that are not on different networks?

schneidz · 04-05-2017, 09:01 AM

in case this is what the op is looking for:
http://www.linuxquestions.org/questi...6/#post3804866

Jjanel · 04-05-2017, 03:39 PM

Welcome OriginalPoster. To precisely see what you have, post output of this command: ip r

#4! I -almost- fell into 'trap' where GooGl returns:
several|multiple|two "default routes" linux|debian|ubuntu
Apparently (I'm learning here too!), the (correct) word is: gateways (?)
http://serverfault.com/questions/823...outes-in-linux
http://serverfault.com/questions/737...routes2/746053 ?!
http://superuser.com/questions/37456...fault-gateways
Even adding site:linuxquestions.org, I still get 188! Yea *web-research*!

Advice to OP: DDG!

&LQ: 1 2 3 4 5 search, etc.