I have a quick question on the way ipfw matches IP masks. If I give this IP
address:
12.144.51.128/17
Am I then correct in thinking it will match all IP addresses from
12.144.51.128 to 12.144.51.255? Or will it start matching from 12.144.51.0?
(not what I want).
Now for the harder question (I guess there is a second question, after all).
If I want to match from 12.51.0 to 12.51.15 (and all their hosts
underneath), would I write this:
12.51.0.0:255.255.240.255 ?
I really wanna crack down on some spammers, but not waste too many ipfw
rules on it.
Thanks!
- Mark
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