Software Firewall with 'log in' function

I need to secure a server with a firewall, that's simple :) But for certain users I would like to open certain other ports (for example direct access to the Database for SSRS report builders).

These users don't have static IP addresses, and so right now each time their address ch开发者_开发百科anges I have to Remote Desktop in, and add their new ip address to the 'allowed' section in Windows Firewall.

Anybody know of a software firewall solution that provides a web front end (on port 80?) that user's can log into to permit additional access?

Thanks

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So in the end I wrote a simple Lightswitch application that keeps track of user's IP addresses and a list of 'known' addresses. Every time people want access tot he database, they must log in there first, which then updates the firewall rules in windows firewall.