Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Newbie, Nat0 access-list bidirectional Question?

Hi if I want traffic to be initiated from the inside and dmz without translation. I understand I can accomplish this by doing a

transparent translation like:

static(inside, dmz) inside address, inside address netmask...

however if I was to use nat0 access list such as..

nat (inside) 0 access-list noNatInside

access list noNatInside permit inside address to dmz address

do I also need...

nat (dmz) 0 access-list noNatDMZ

access list noNatInside permit dmz address to inside address

or is the nat0 access list, noNatInside bidirectional in that it will allow the reverse reading of, dmz to inside initiated traffic, provided the ACL exist to permit the traffic of course.

thanks in advance

hermo

2 REPLIES
Hall of Fame Super Blue

Re: Newbie, Nat0 access-list bidirectional Question?

Hi

Is this a pix firewall ?

You can turn off NAT altogether with v7.0 for the Pix or ASA.

But assuming you don't want to turn off NAT or you can't because your are running an earlier version of code, if you want traffic to be initiated from the DMZ to the inside you will need the static statement.

If traffic was only ever initiated from inside to the DMZ you would be fine with your "nat (inside) 0 access-list NoNatinside" statement.

HTH

Jon

New Member

Re: Newbie, Nat0 access-list bidirectional Question?

yes its pix firewall running version 6.3

thanks for the answer. I will go with the static statement. regards

109
Views
0
Helpful
2
Replies