We have two networks running from an RB1100AH router:
1. 192.168.1.0/24 (interface ether2)
2. 192.168.0.0/24 (interface ether10)

I’d like to print to an HP P2055dn printer at 192.168.1.100 (static IP) from the second network on ether10.
Here’s what I’ve done with the firewall:
From the second network (192.168.0.0/24), I’m able to ping the printer but not print to it. What am I missing?

Thank you.

Sounds like routing problem. Don't need rules to accomplish this, maybe masquerade rule with ether 2 as out interface, because most printers can only set gateway. Create route in pc using 192.168.0.0/24 (actual ip of router) as gateway for destination ip 192.168.1.0/24.

Ah, the solution was easy enough once I re-checked my firewall rules. I had a rule above the ones I was adding that dropped everything that wasn't from a specific MAC address.

So for anyone trying to share a printer across two networks running under a single Mikrotik, you can simply use firewall rules, substituting your network information:

chain=forward action=accept connection-state=new
src-address=192.168.0.0/24 dst-address=192.168.1.100
in-interface=ether10 out-interface=ether2

chain=forward action=accept connection-state=established
src-address=192.168.0.0/24 dst-address=192.168.1.100
in-interface=ether10 out-interface=ether2

chain=forward action=accept connection-state=established
src-address=192.168.1.100 dst-address=192.168.0.0/24 in-interface=ether2
out-interface=ether10