Need to open a port from one Lan i/f to another

RouterOS General
1

Config: RB450
E1 - Lan
E3 - Wireless Lan
Firewall rule to block all traffic from E3 to E1.

New requirement - I have a vendor’s system hanging on the E3 interface. I need to be able to open port 1433 on this so that I can fwd it to port 4433 on a particular IP on my LAN (E1) without compromising the separation between E3 and E1. How do I accomplish this?

Thanks.

2

then make your firewall rule. block all but the port you want. :smiley:

make a nat rule. before the “block” rule.