IPFW AND CRON

[BIS]

Hello Gurus,
I have a FreeBSD box running with NAT and IPFW. I have been trying to figure out what command to use to disable an internal IP address (f.ex. 192.168.0.2), and what command to use to enable it again. By disable/enable I mean allowing that IP to access the internet. Once I have figured this out, I would like to have a cron script running that automatically disables that specific internal IP at f.ex. 20:00PM, and enables again at f.ex. 08:00AM. Would any of you guys be able to point me in the right direction?

 

[KarveR]

Ipchains would be :
ipchains -I input -s xx.xx.xx.xx -j DENY -l and
ipchains -I input -s xx.xx.xx.xx -j ACCEPT -l

But none too sure for IPFWD.

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