On Monday 02 August 2004 08:45, Paolo Santancini wrote:
Hi all, anybody can give me information about the kernel message called "martian source" written in "/var/log/messages"??? What does it mean?
Martian source is network traffic from the wrong subnet appearing on an interface. eg. eth0 has IP 192.168.0.1 on subnet 255.255.255.0 eth1 has IP 192.168.1.1 on subnet 255.255.255.0 This means that eth0 should only see IP traffic from IP addresses from its subnet (192.168.0.x) and eth1 should only see traffic from its subnet (192.168.1.x) If an IP on the network (say a forgotten printer or something) is still configured with a previous network address (202.167.2.34) and is seen on eth1 it will be seen as martian source. If one of the machines on the network 192.168.0.x is plugged into the wrong switch and is effectively on the same network segment (physical) as eth1, then you will see martian source from that IP address (or you have multiple networks that the Linux box is not aware of) Martian source is not a major thing, but it is making you aware of the fact that something in your network setup is either setup incorrectly, or not configured optimally.
Thank Bye Paolo
-- Do not overtax your powers.