PIX's Interface PAT with 677

[junsheng]

I have a PIX 515UR,It connect to Cisco 677 ADSL Router directly.

Now,I setup using PIX outside interface's ip address as PAT.

It's working fine except FTP.

I connect to Internet's FTP Site,it cause timeout.

And if I change not use PIX outside interface's ip address as PAT,use another not using ip addres as PAT,it's working normally.

And I use the same PIX 515 connect to another's ADSL router (not Cisco) that function,use PIX outside interface' ip address as PAT, working.

Why,Is there something that I must to setup?

[p.krane]

I remember there were some bugs with the PIX and PASV ftp with PAT some time ago but those have been fixed by now. Make sure your code is current. Why it works with other routers and not the 677 will take more in depth troubleshooting. To start make sure your 677 isn’t setup for PAT also. The double-NAT/PAT might be a problem.

[junsheng]

Thanks for your reply.

But I can't to make sure 677 is working in PAT mode or not.

Because my ISP didn't let me to change even to view the 677.

And PIX O.S. is latest 6.11,and I even use nat with norandomseq,the situation was the same.

I don't know where can I to check.