Ok, so it needs to be compiled with Stackguard to receive that layer of protection. What would something be called that monitors or protects a binary from this sort of attack, if one exists?

Pretend you have a server, all of a sudden you learn it is vulnerable to a buffer overflow. A patch is due out in a week, and you cannot risk being exploited in the week. However, you are forced to keep the server up (for w/e reason).

Is there any software available that you could run the server under that would help prevent it from being exploited? (Pretending that you can't stop the attack at the firewall or elsewhere)

If that makes no sense or doesn't exist for a specific reason, then I'd like to know why.

Thanks!