On Wednesday 03 December 2003 18:58, David F. Strauch wrote: > Yes, Antony this is the case. I have only one WinXP machine that I am > testing with. I'm testing the external interface eth0 and I have unplugged > eth1 from the hub. > > When I nmap -sT -p 25,110 -P0 xx.xx.xx.xx I get the following output form > nmap: > > Starting nmap V. 3.00 ( www.insecure.org/nmap ) > Interesting ports on (67.153.34.147): > Port State Service > 25/tcp open smtp > 110/tcp open pop-3 > > Nmap run completed -- 1 IP address (1 host up) scanned in 1 second > Why don't you run a packet sniffer on this interface and run the test again. That should show what it is nmap is seeing, if anything. Jeff