Un truc : le mode "drop" de netfilter simule en fait des ports UDP
ouverts.... puisque il n'y a pas d'erreur :
kieffer:/home/jerome# nmap -sU -p124 islay
Starting nmap 3.27 ( www.insecure.org/nmap/ ) at 2004-02-17 11:28 CET
Interesting ports on islay (82.67.68.108):
Port State Service
124/udp open ansatrader
Nmap run completed -- 1 IP address (1 host up) scanned in 1.074 seconds
kieffer:/home/jerome# nmap -sU -p124 islay-vpn
Starting nmap 3.27 (
www.insecure.org/nmap/ ) at 2004-02-17 11:30 CET
The 1 scanned port on islay-vpn (192.168.200.1) is: closed
Nmap run completed -- 1 IP address (1 host up) scanned in 1.000 seconds
--
Jérôme KIEFFER
The programming of today's high speed digital computers is still an art
rather than a science.
Savitsky and Golay, Anal. Chem., 36, p1638 (1964)