How to restrict the class B private IP connect from internet?

[Manfred Bartz]

"=BA=F4=B8=F4=B9C=ABL" <patrickzippy@giga.net.tw> writes:

> I don't know how to set the IP range?
>=20
> 172.16.0.0 ~ 172.31.255.255

Entering ``172.16.0.0-172.31.255.255''=20
into <http://logi.cc/nw/NetCalc.php3>
will tell you: ``172.16.0.0/12''

--=20
Manfred
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NetfilterLogAnalyzer, NetCalc, whois at: <http://logi.cc/linux/>