XG 115 and a AP 100: Require network printing for 2 printers on different IP

Question

I have a XG 115 and a AP 100. They are configured as: Wifi newtork 10.10.20.1 - 10.10.20.20/100 in a separate zone: AP connected to Port4 with 10.10.10.1 - 10.10.10.10/100: Firewall rules set for wifi to lan, lan to wan. All wifi users have internet access. 
 My question: 
 I have 2 network printers with ip addresses 192.168.178.21/31 
 How do I setup network printing 
 
 Thanks

lferrara · Accepted Answer

Nigel, 
 welcome to Sophos Community. I gues your printers use physical network cable and they are connected to LAN zone. In any case you will need a LAN to LAN firewall rule in order to allow computers to access your printers. If your Wi-FI belong to a different zone (because you created another one) you will need a (your zone) to lan firewall rules. 
 Make sure you uncheck "match know users". 
 Regards