[NTLUG:Discuss] Port forwarding question
bkontr
bkontr at yahoo.com
Tue Jun 3 21:01:44 CDT 2003
Hey everyone,
I googled the archive and couldn't find the answer so here it goes. I
have an Apache server inside my firewall and I am trying get my firewall
to forward port 8080 to my apache server which is also running on port
8080. I should explain that the reason I am using 8080 at the moment
is because I am not sure if Comcast is blocking port 80 so I opted to
use a non standard port. My firewall is fairly fascist by design and
I'm not sure if a previous (iptables) rule is the problem but I still
can't seem to get the port forward to work. These are the rules I
which I borrowed from an example from the internet:
INTIF1=Internal Network Interface 1
EXTIF=External Network Interface
HTTP= The IP of the Apache server
COMCAST= The DHCP leased IP from Comcast
$IPTABLES -A FORWARD -p tcp -i $EXTIF -o $INTIF1 -d $HTTP
--destination-port 8080 --source-port 1024:65535 -m state --state NEW -j
ACCEPT
$IPTABLES -A FORWARD -t filter -i $INTIF1 -m state --state /
NEW,ESTABLISHED,RELATED -j ACCEPT
$IPTABLES -A FORWARD -t filter -i $EXTIF -m state --state
NEW,ESTABLISHED,RELATED -j ACCEPT
$IPTABLES -t nat -A PREROUTING -p tcp -i $EXTIF -d $COMCAST
--destination-port 8080 --source-port 1024:65535 -j DNAT --to $HTTP
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