Re: ICMP error

[Ernest Johanson <ejohan@fuller.edu>]

I recently had this problem with a misconfigured printer on our network.
Turned out that the subnet mask was improperly set. Once that was fixed,
the messages stopped.

Ernest Johanson
Web Systems Administrator
Fuller Theological Seminary


On Tue, 23 Nov 1999, Colin Watson wrote:

> Date: Tue, 23 Nov 1999 22:15:51 +0000
> From: Colin Watson <cjw44@cam.ac.uk>
> To: vtorres@die.upv.es
> Cc: debian-user@lists.debian.org
> Subject: Re: ICMP error
> 
> 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]
>