[SOLVED] Add a masquerading source NAT rule that forwards traffic from your router port to the WAN connection

PROBLEMCHYLD · 03-31-2021, 05:48 PM

Can someone give me an iptables example of what it should look like? Thanks

berndbausch · 04-01-2021, 02:07 AM

Code:

iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to 123.12.23.43

EDIT: I am not sure how a source NAT rule can forward traffic, to be honest. My answer is probably not helpful.

PROBLEMCHYLD · 04-03-2021, 09:10 PM

This is what I'm trying to accomplish, but don't know how to put it in iptables format.

1.) a firewall rule to permit inbound traffic on port 12345
2.) a destination NAT rule for inbound traffic doing the forwarding configured above
3.) usually uses a default system-wide source NAT rule for outgoing traffic that specifies IP-masquerading

PROBLEMCHYLD · 04-04-2021, 01:19 PM

This is what I'm trying to do with iptables

external public ip:34000 TCP redirected to internal 192.168.0.12:34000

I have tried dnat snat forward etc... Its not working for me.