Open ports?

From: AP (ap76@email.com)
Date: 01/09/03 

From: "AP" <ap76@email.com>
Date: Thu, 9 Jan 2003 17:16:40 -0000

I am concerned about our server which we configuring atm.
It's going to be a Domain Controller using Windows 2000 Server + Exchange
2000.

What do I need to do to secure the server so no hackers/intruders compromise
the server and abuse it's installed services like iis/mail/etc.

I was thinking of using the tcp/ip rules to only allow ports that I add.

What ports would I add?

Considering that this server is a domain controller running IIS 5 and is a
mail server, but also will have VPN capabilities and PcAnywhere will run on
it.

Many thx.

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