Home / server / Questions / 224747
In Process
Henry-Nicolas Tourneur
Asked: 2011-01-21 08:28:39 +0800 CST

Linux ip route matching the source ip

  • 772

I would like to know if it's possible to tell a Linux kernel to route all packets destinated to X via interface/ip Y but only in case the source IP address would be a specific one.

Any idea if this is possible?

Thanks and regards,

linux ip source route

2 Answers

  1. Yes that's called source routing :

    ip rule add from 10.0.0.10 table toto

    ip route add default via 88.88.88.88 dev eth1 table toto

    You can have more informations here :

    source routing in the lartc guide

    • 6

  2. Any routing decisions based not on destination IP address called PBR (policy-based routing). Usually, PBR is implemented via firewall, so look for possibility to change out interface for packet in iptables.

    • 1