Some of my users are asking for OWA (Outlook Web Access, via Exchange 5.5 SP 3 ) from the outside world. I am not naive enough to punch a whole through my firewall straight to the Exchange box despite their suggestions, but I would like to accommodate them.
So far the only things that I can come up with are:
A) Install an IIS server with OWA on it in the outside world, with some sort of firewall and make it multi-homed straight into Exchange (which could also be multi-homed) via cross over cable.
B) I could just install the IIS server and create some sort of firewall rule that allows a certain port to talk to Exchange from the outside of the firewall from the IIS server only.
If I choose A) What firewall software for NT can aid me in this task?
If I choose B) What port does IIS or OWA use to talk to the Exchange server for information?
And of course there is C) Other suggestions.
Thanks.
