Windows Firewal settings - Exceptions vs Advanced Settings Services

Hello everyone,

I have to open a port to let an application see the internet (let use a SMTP server for example). I never understood the differences between allowing an application to interact with the internet (WFW Exceptions) vs. forwarding a port (Advanced Settings Services).

Which is better, safer, simpler? The computer is running the application locally and acting as a router (ICS enabled).

Any input would be appreciated.


Reply to
Kevin Brault
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I think an Exception is dealing with the machine the is hosting the PFW and any port the needs to be open for the application running on the host machine.

Port forwarding I think would be forwarding traffic to the LAN IP/machine (the ICS LAN machine) that the host machine running the XP FW is protecting on the LAN.

What's the better solution is using a NAT router to protect the LAN and not use a PFW solution to do it.

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You could get one that meets the specs in the link.

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Duane :)

Reply to
Duane Arnold

If both sould work, they have to do the same.

Yours, VB.

Reply to
Volker Birk

I believe one achieves a little better granularity than the other.

The WFW exceptions are basically telling the operating system that if a particular application wants to open up listening ports, LET IT! So if you add your SMTP server application in the WFW exceptions list, it will be allowed to open up any listening ports it wishes as well as establish outbound connections at will.

The Advanced-settings-services you are referring to is allows you to be much more granular in that you can just say "Hey I want port 21 to be in listening mode. I dont care what application is doing the listening, but just know that i dont want the firewall to drop packets destined for 21 because its going to be listening. (Thats if you were hosting an ftp server obviously, but you get the idea) And this tab provides even a further level os granularity since it lets you define which nic you want to apply this particular rule to.

Regards, Train

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