I am trying to implement the verrevpath suggestion in the ipfw man
page, as follows:
The verrevpath option could be used to do automated anti-
spoofing by
adding the following to the top of a ruleset:
ipfw add deny ip from any to any not verrevpath in
However, when I try to add the rule, I get an error:
lilbuddy:~ paimin$ ipfw add deny ip from any to any not verrevpath in
ipfw: unknown argument ``not''
Can someone tell what is causing this syntax to fail? Thanks!
--
Mark Edwards
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