Re: DNS for SIMS inside a firewall

[Tod Fitch]

I run a private DNS server inside my firewall. It is set up to know all of my LAN's machine names and I have private definitions for my public names. So from the outside you can see www.domain.com and mail.domain.com but inside you see www.domain.com, mail.domain.com, workstation1.domain.com, workstation2.domain.com, etc. The public see the public IP address(es) given out by the public DNS server(s) and from inside the firewall you get the private addresses dished out by the private DNS server. On my laptop, I simply use the public name of my mail server in all locations.

On Wednesday, December 4, 2002, at 11:06 AM, Charles L. Martin wrote:

I am having trouble getting SIMS to work behind a firewall. While it can send and receive email, I cannot figure out how to set up the DNS to work to retrieve email from behind the firewall. The firewall will not allow computers inside the network to receive DNS responses from outside DNSes which point to servers inside the network. So, I can only get email by pointing at the local network IP. This works, but when I then take my laptop home, it doesn't work because it points at a non-existent address.

This has got to be a common need, but my ISP seems unable to understand or solve the problem. Any ideas?

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