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masqurading



Hi
 
I have build a NAT machine on linux with 2 ethernet cards and IP Masqurading
I am forwarding all trafic from my virtual network 192.168.1.0/255 to the real ip and it works great !
 
The problem is, I need to open some special ports on the NAT for Microsoft online games
 
 
       The following TCP ports must be open:
 
            80
 
            443
 
            6667
 
            28800-29000
 
I have used the ip masquradin HOWTO and working with the rc.firewall script that is writen there :
 
/sbin/modprobe ip_masq_ftp
echo "1" > /proc/sys/net/ipv4/ip_forward
echo "1" > /proc/sys/net/ipv4/ip_always_defrag
/sbin/ipchains -M -S 7200 10 160
/sbin/ipchains -P forward DENY
/sbin/ipchains -A forward -i eth0 -s 192.168.1.0/24 -j MASQ
 
 
How do I configure my script to open ports ?
 
Adi