Hi Tom, I think your Apache server is expecting connections on port 80 & your Nat'ing will occur only if the packet comes in form the $WWW interface. Since you are on the local LAN the packets are not Nat'ted and hence you get the connection refused from the server as it is getting requests on a port where no application is listening. You don't need any rule, just type http://myserver.com within the LAN. Hope this helps! Regards, Deepak Seshadri -----Original Message----- From: netfilter-bounces@xxxxxxxxxxxxxxxxxxx [mailto:netfilter-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Tom Sent: Wednesday, September 01, 2004 1:54 PM To: netfilter@xxxxxxxxxxxxxxxxxxx Subject: locally access server behind firewall Hi, I have a linux firewall (iptables), and a linux server with apache behind that firewall. My provider blocks ports below 1024, so I have a prerouting-rule that redirects traffic like this: $IPTABLES -A PREROUTING -t nat -i $WWW p tcp -d $EXTIP --dport 8888 -j DNAT --to $SERVER:80 I also have 2 forward-rules: $IPTABLES -A FORWARD -i $WWW -o $LAN -p tcp --dport 80 -j ACCEPT $IPTABLES -A FORWARD -i $LAN -o $WWW -p tcp --sport 80 -j ACCEPT and I have these two lines to allow my local pc's to connect to the firewall with ssh and stuff like that: $IPTABLES -A INPUT -i $LAN -s $INTLAN -j ACCEPT $IPTABLES -A OUTPUT -o $LAN -d $INTLAN -j ACCEPT where: $EXTIP = my external IP address $WWW is eth1 $LAN is eth0 $SERVER = my server's internal IP address. $INTLAN = "192.168.0.0/24" This works really well when I try to connect from the outside to my webserver. But, if I try to connect to http://myserver.com:8888 from the internal network (or from my server itself), I always get 'connection refused'. I'm pretty sure I need some other rules, but can someone please help me in the good direction here? Thanks a lot!! PS: Here's a little drawing of the situation: SERVER (eth0) <----> (eth0) GATEWAY-PC (eth1) <----> internet
