Hongwei Li wrote:
Hi, Sorry that I hit the Send before I finish it. I have a question about iptables in fc5. I have iptables 1.3.5-1.2 installed. By default, the iptables has a line -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT ... and -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited I try to add the port 2049 for our lan nfs by adding aline before the above reject line: -A RH-Firewall-1-INPUT -s 128.252.85.0/255.255.255.0 -m state --state NEW -m tcp -p tcp --dport 2049 -j ACCEPT
That rule will only match the initial packet of the stream. You will also need to match states ESTABLISHED and RELATED: -A RH-Firewall-1-INPUT -s 128.252.85.0/255.255.255.0 -m state --state NEW,ESTABLISHED,RELATED -p tcp --dport 2049 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited and restart iptables. But my other linux boxes cannot mount the exported folder. If I stop the iptable, then they can mount it. I tried to open several other ports: 137, 139, etc. But as long as the last line is there, it always failed. If I comment out the last line, then nfs works. What is "icmp-host-prohibited"? How to set it to allow some requests? It seems that it is different from in fc4. Is there any link for iptables in fc5 where I can learn more? Thanks! Hongwei
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