DNS

[dazz828]

I know this may sound stupid, but I am a complete PIX newbie. We just upgraded from a 3com OfficeConnect 25 Firewall.

Where do I put our ISP's DNS info on the external interface? I only see a spot for IP, Subnet, Gateway (T1 router). I see internal DNS on the internal network, but can't seem to find the external DNS?

 

[lgarner]

As I recall, you don't. The Pix doesn't do DNS resolution itself. Only your workstations will have DNS addresses.

If you mean that you're the Pix as a DHCP server and need to pass DNS addresses to the workstations, then you'd enter

dhcpd dns address1 (optional address2)

See

http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_62/config/pixclnt.htm

 

[dazz828]

Oh ok thanks!

Because on the 3Com you had to enter your ISP's DNS otherwise none of the webpages would resolve externally. We use our own internal DNS server 10.1.1.15 for the clients.