Forwarding traffic between 2 interfaces
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Worked when I did:
sysctl -w net.ipv4.conf.all.forwarding=1
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Author by
Konstantin Tarashchanskiy
Updated on September 18, 2022Comments
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Konstantin Tarashchanskiy over 1 year
I have 2 VLANs connected to a 'router'. All the machines can ping other machines within their own VLAN and the router. The router can ping all of the machines. I am trying to get machines to talk to other VLAN via the router.
On the router, the VLANs are on eth1 and eth2. I have added the following iptable rules:
-A FORWARD -i eth1 -o eth2 -j ACCEPT -A FORWARD -i eth2 -o eth1 -j ACCEPT
On machines within the VLANs I added the following route entry:
route add -net 172.16.0.0 netmask 255.255.255.0 gw 172.16.30.1
Where
172.16.0.X
is the ip address range in the other VLAN and172.16.30.1
is the router's IP.What did I do wrong? What did I not do?