[TriLUG] linksys linux router question

[Ralph Blach]

I have a linksys linux router and  has everthing all the function I want 
almost.

What is does not seem to have is the ability to drop connection on a 
port if it does not come from a specific range of address.

Specifically , I would like to forward sendmail and and sshd only if 
they come from specific address ranges.

Is there any way to do this using the linksys firmware or do I have to 
load a new firmware.

Any ideas would be appreciated.

Chip