[Shorewall-users] UDP ports

Tom Eastep teastep@shorewall.net
Wed, 17 Apr 2002 09:00:18 -0700 (PDT)


On Wed, 17 Apr 2002, Simon Turvey wrote:

> A scan of my system from a friend's box has shown all my UDP ports to be
> open.  Is this the default configuration for Shorewall and if it is, why?
>

Read the documentation of nmap CAREFULLY. If nmap does not get a "port 
unreachable" icmp response, then it reports the port open -- in 
particular, if it gets NO REPONSE it reports the port as open.

-Tom
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Tom Eastep    \ Shorewall - iptables made easy
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