Re: ICMP error

[cjw44@cam.ac.uk (Colin Watson)]

Vicente Torres wrote:
>I receive hundreds of times pro day 
>the following message on my text screens:
>
>193.152.56.57 sent an invalid ICMP error to a broadcast
>
>¿Can I do anything to avoid receiving this message?

I had the same problem, due to an apparently misconfigured LANManager
server on this network. I used a firewall to filter it out:

ipchains -A input -j DENY -p icmp -s 131.111.212.123

... on > 2.1.101 or 2.2 kernels, or:

iptables -A INPUT -j DROP -p icmp -s 131.111.212.123

... on 2.3 kernels. (Can't remember what you need for 2.0 and <= 2.1.101
kernels (ipfwadm), sorry.)

-- 
Colin Watson                                           [cjw44@cam.ac.uk]
Trinity College, Cambridge, and Computer Science         [riva.ucam.org]