iptables and DNAT

[sproosy]

I want to redirect all POP3 requests from mchineA to machineB. How waould i do that using NAT or DNAT?

Cheeers

ryan

Sproosy MCP

Keep it real!

 

[danielhozac]

iptables -t nat -A PREROUTING -p tcp -d <your computer's IP> --dport  110 -j DNAT --to-destination <other computer>:110

should do it.

//Daniel

 

[sproosy]

Thanks for that! One last question? Once the redirect happens do the packets know where to go on their way back? i.e. If i have sent them from A to B wil they then go back from B to A?

Cheers

Ryan

Sproosy MCP

Keep it real!

 

[sproosy]

Its all good i got it to work using this:

iptables -t nat -A PREROUTING -i eth0 -p tcp --sport 1024:65535 --dport 110 -j DNAT --to 192.168.0.38:110

iptables -t nat -A POSTROUTING -o eth0 -p tcp -d 192.168.0.38 --dport 110 -j SNAT --to 192.168.0.122

Hope that this can help anyone who comes across this problem in the future.

Thanks for your help danielhozac

Sproosy MCP

Keep it real!