Hello. I currently have a Sonicwall TZ-170 running Sonicwall OS Standard in Transparent mode. I have an AS400 server and a SBS 2003 server running behind the TZ-170. The AS400 and the SBS 2003 server both have public IPs (Cisco 2620 Router(65.xxx.xxx.17)--- (Sonicwall TZ-170 (65.xxx.xxx.18)--AS400 (65.xxx.xxx.19)---SBS 2003-Dual-Homed (65.xxx.xxx.20, 10.0.0.2 Private)). I want to add a Sonicwall TZ-190 to act as firewall for just the SBS 2003 network and leave the TZ-170 in place for the AS400. I have done some testing in regards to going to a single NIC setup for the SBS and it seems to work well. In the TZ-170, I see under Network-Intranet that I can specify the address ranges that are connected to the LAN link. Currently, that range is from 65.xxx.xxx.19 to 65.xxx.xxx.22. Am I correct in assuming that I should change this range to 65.xxx.xxx.19 to 65.xxx.xxx.19 so that the TZ-170 is only responsive to that IP address? I would then configure the TZ-190 to be responsive to the rest of the addresses (65.xxx.xxx.20-22)? Thanks.