We have 2 PIX FW: 515 and 515E. They both work OK when connected to Verizon (ISP).
But when we switch to AT&T (ISP), only 515 works, but not 515E, even we use the same template.
Our Network: Inside LAN ---- PIX 515E -- AT&T Router --- Internet
We can ping any IPs on the Internet from the firewall but not from the Inside LAN.