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Re: ICMP in firewall log from root-servers: msg#00325

Subject: Re: ICMP in firewall log from root-servers
> I have been noticing a recent trend in my log files.
> 
> For example:
> 193.0.14.200
> 192.203.230.250
> ICMP<8:0>|default policy: BLOCKED
> 
>  From what I can tell these are ROOT servers if I am right.

        No.  They are not root servers.  However they are machines that
        are used to measure stuff associated with the root servers.
        See caida.org for details.

> My firewall does not allow ANY incoming ICMP 8:0...

        Well then you should not allow out ANY IP packets at all.
        ICMP is a essential part of IP and is not a component that
        can be just turned off without negative consequences.
 
> Should this be allowed?
> Anyone else noticing any thing like this all of a sudden??
> 
> -- 
> J.D. Bronson
> Aurora Health Care // Information Systems // Milwaukee, WI USA
> Office: 414.978.8282 // Fax: 414.328.8282 // Pager: 414.603.8282

        
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews@xxxxxxx




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