Firewall that will allow me to open/close specific ports?

I am looking for a good firewall that will allow me to open and/or close specific ports. It seems most are too easy and forbid this, or throw so many extras in (popup blocking, antispyware, etc.) I don't want. Any experience anyone would care to pass along?

Thanks in advance!!
Gerard

 

Sygate free version will do what you ask w/o the "extras".

Regards - Charles

 

Thanks Charles. I had no idea Sygate's free version was as sophisticated as it is. I have been running it now for a couple of hours and am blown away by how much better I like it over ZoneAlarm. Thanks for your help!
Gerard

 

Outpost free is also an option.
Kerio 2.1.5 is a rules based fw. Will do the job if configured properly. Unsupported by manufacturer.

 

Be careful about Outpost Free............unless something has changed it has not been updated in a long time

 

And try a search on the general firewalls section. I've put up 3 for comments by the WSF peeps, and you will find some more (If you don't want app control... 8Signs or VisNetic present tremendously powerful options)