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Old 11-18-2003, 08:17 AM   #1
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Registered: Jul 2003
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I have 3 NIC's in my machine.

If I do a nmap -sU (UDP Scan) on all my IP addresses it shows port 177 (XDMCP) open on all 3 IP addresses.
What I'd like to do is for port 177 to be open on just one of my ip addresses and it closed on the other 2 ip addresses is this possible and how is this acheived?

using tightvnc and gnome (gdm)

thanks in advance
Old 11-19-2003, 02:05 PM   #2
Registered: Oct 2002
Location: Curitiba - Brazil
Distribution: Conectiva
Posts: 334

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One option is to create some rules on your server like:
# iptables -A INPUT -j DROP -s <ip that can't connect> -d <your ip> -p udp --dport 117


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