Thank-You I will try that.






On Tue, 2004-03-02 at 10:04, Brian Cluff wrote:
> It appears you have half of it right.  What you're missing is the rule 
> to make your forwarded traffic from 192.168.1.2 look like it's coming 
> from 192.168.1.1.  Try something like: (May contain typos... but it will 
> at least point you in the right direction)
> 
> iptables -t nat -I PREROUTING -d 192.168.1.1 -p tcp --dport 110 -j DNAT 
> --to 192.168.1.2
> iptables -t nat -I POSTROUTING -s 192.168.1.2 -j SNAT --to 192.168.1.1
> 
> Also make sure that you have forwarding turned on, and that should be 
> all there is to it...
> 
> Brian Cluff
> 
> elemint@hotpop.com wrote:
> > I am trying to port forward on tcp port 110 but I keep getting 
> > "telnet: Unable to connect to remote host: Connection refused" 
> > 
> > 
> > backround information:
> > localhost 192.168.1.1
> > email server 192.168.1.2
> > 
> > 
> > I get connection refused when I try any of the following commands
> > 
> > telnet localhost 110
> > telnet 192.168.1.1 110 
> > 
> > The only one that works is telnet 192.168.1.2 110
> > 
> > 
> > The command to configure port forwarding:
> > iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 110 -j
> > DNAT --to-destination 192.168.1.2
> > 
> > 
> > 
> > 
> > 
> > The output from iptagbles -L -t -nat 
> > 
> > DNAT       tcp  --  anywhere             anywhere           tcp dpt:pop3
> > to:192.168.1.2 
> > 
> > 
> > I have also looked at tcpdump but there are no headers that come across
> > the interface when I get an access denied, so it seems the kernel might
> > be stopping it before it gets on the wire.  
> > 
> > 
> > 
> > 
> > Jim
> > 
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