> All the responses are great, but I need to know the port number, because
> I'm blocking it in my Cisco Router, not a linux machine. Thanks.

I am not certain on this one, but gurus please correct me if I am wrong. If
you substitue the service name for the port number in the below command and
the service requires a port that service must be listed as a port in
/etc/services.

> ipchains -A input -p icmp -j DENY -s 0.0.0.0/0 -i eth0 -d 0.0.0.0/0

If this is correct most of the port/services are listed in /etc/services, at
least AFAIK.

Chad


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