[CLUE-Tech] Firewall Stops Working...

[jose sanchez]

> Hello:
> 
> This is my first post to the list and I would like
> to
> know if anyone have experienced or heard of what's
> happenning to my box.
> 
> I have a RH7.2 box as a firewall running an iptables
> script. The box has three NICs. One for a LAN, one
> for
> a DMZ, and one for the Internet connection running
> dhcpcd to get an IP from a cable modem (isp: Road
> Runner). Everything works fine but, after hours of
> innactivity I cannot access the Internet from the
> LAN.
> I can do everything else (chat, ftp, ssh, ping,
> traceroute, etc...) from the LAN to the outside
> world.
> 
> 
> I was thinking it might be something with the
> expiration of the IP lease but I have a chain to
> take
> care of that:
> 
> iptables -A INPUT -i $INTERNET -d udp -s
> $DHCP_SERVER
> \
>   --sport 67 --dport 68 -j ACCEPT 
> 
> iptables -A OUTPUT -o $INTERNET -d udp -d
> $DHCP_SERVER
> \
> --dport 67 --sport 68 -j ACCEPT
> 
> These chains should do it but unfortunately in order
> for me to get the box back to normal I have to
> restart
> it and also restart the modem.
> 
> Thank you in advance for your help.
> 
>   
> 
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=====
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