Will a server with a NAT primary address work?

[davidamis]

I am renting 1U in a rack from a CoLo company. The rack is in a local data center, my server behind the CoLo’s firewall. My server was recenlty moved by the CoLo company from a different data center, where I had 4 static IP addresses. Now my server has 4 10.10.1.x addresses, with the CoLo’s firewall doing NAT from the static outside IP addresses to the 10.10.1.x addresses.

If you have many web servers, I can imagine this could make sense, but for a single machine I don’t see any benefit. Web serving is working, but other services are not. My question is: Is it easy, possible, difficult, or impossible to get services like mail, listserve, AFP, VPN, etc. working with this setup? Do tools like changeip and Server Admin know when to use a local address instead of the public address?

Thanks,
David

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