Hi. I've a PIX525 ver5.3 I'm trying to traslate a private address 172.16.0.0 to a public address 188.8.131.52 The first address is a DMZ4 and the second is the traslate to outside. I have thist instruction: NAT (dmz4) 2 172.16.0.0 255.255.248.0 0 0 and GLOBAL (outside) 2 184.108.40.206 Adctionaly, I have GLOBAL (outside) 1 220.127.116.11 for the others address (inside and other dmz's) but when an address 172.16.x.x is in internet, its leaves with address 18.104.22.168 I don't know why. In my case, the sentence NAT (dmz4) 2 is not working. I hope to be clean in this problem. If somebady can help me, I'll apreciate it. Thanks a lot.