NAT question

[george roman]

hi,
i have a small privat network and i do not want to
give internet acces to all the users in the network. 
for nat, i use comand 

ipfw add divert natd all from any to any via fxp0

what would be the comand with whom i can restrict
acces only to certain ip addresses ?

i tried this command
ipfw add divert natd all from 192.168.1.1/32 to any
via fxp0 

to give access to internet only to the 192.168.1.1 ip
but it didn't work

can you help me?


		
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