On Mon, 13 May 2002, GVB wrote:

> Now I am really confused... a scan of another host using the same syntax
> doesn't report every udp port being open.
> 
> Could this have to do with a firewall in front of the machine??

Very well. Can you reproduce the two test and see if you get any ICMP 
packets return in one case and none in case of the firewalled machine?

My bet would be that you get some ICMP results in one case and none in the 
other.

Hugo.

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