Dear Colleagues,   I've got a customer operating a watchguard FW, we are going to replace this one with a MX84 soon. On the current FW config there is 2 set of public IPs configured on the WAN interface : 1 for the interface itself /30 and 4 as alias IPs /29..   example: WAN interface mx ip: 10.1.1.2/30 public alias IP : 11.1.1.1/29 mx lan ip (vlan 10): 192.168.1.1/24 mail server ip: 192.168.1.1/24   Each IP is reachable from outside. My customer asks if it's possible  if they want to do NAT for their email, which is currently running on watchguard outgoing using ip alias 11.1.1.1/29 and in incoming is using 11.1.1.2/29. For incoming/inbound yes we can do NAT 1:1 or 1:many. how about outgoing is there any other way i can configure for outgoing using alias ip 11.1.1.1 instead of outgoing using wan interface ip: 10.1.1.2/30?   Many thanks, ... View more