Date: Thu, 16 Sep 2004 03:45:40 -0000 From: "Max Laier" <max@love2party.net> To: <pf4freebsd@freelists.org> Subject: [pf4freebsd] Re: Whitelist IPs via pf 1.61 Message-ID: <000901c363a5$02752090$01000001@max900> References: <3F3D9534.6080802@qubix.ca> <002201c363a3$5d01e450$01000001@max900>
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Forgot to tell about the best part: This gives you per-table-entry accounting, meaning that: #pfctl -vt surfers -Tshow #note the -v flag will give you detailed output about every entries activities, so you can interfere if someone surfes too much. > This can be done in various ways, the most powerfull and yet easy way is to > use a table: > > >>> pf.conf <<< > table <sufers> persist file "/etc/port80.allow" > > # block here > > pass out on $ext_if from <surfers> to any port 80 > >>> pf.conf <<< > > This will read all the entries in /etc/port80.allow to the table as you load > the ruleset. You can add hosts or subnets temporaly by issueing: > #pfctl -t surfers -Tadd 65.192.5.1 or > #pfctl -t surfers -Tadd 66.192.5.0/24 > You can even add negated entries, if you want to allow a whole subnet, but > one or two hosts: > #pfctl -t surfers -Tadd 65.192.6.0/24 > #pfctl -t surfers -Tadd !65.192.6.13 > will allow all hosts from 65.192.6.0/24 but disallow 65.192.6.13 > The contens of the table can be viewed by: > #pfctl -t surfers -Tshow > > More information at: > pfctl(8) > http://www.openbsd.org/cgi-bin/man.cgi?query=pfctl&sektion=8&manpath=OpenBSD+3.3 > pf.conf(5) > http://www.openbsd.org/cgi-bin/man.cgi?query=pf.conf&sektion=5&manpath=OpenBSD+3.3 > And the pf-faq: > http://www.openbsd.org/faq/pf/tables.html > > > Hello. This is my first time posting to this mailing list, but it looks > > like I would probably get some good ideas/answers here. Anyway, I have > > a specific subnet (65.192.x.x) blocked from accessing port 80, but I > > want to "whitelist" (if that is the proper term) and have it be able to > > access port 80. So basically, I want the whole subnet blocked still, > > except if I can whitelist one IP to allow traffic to/from port 80 from > > it. Is this possible? I'm running pf 1.61 and FreeBSD 5.1-CURRENT > > (last rebuilt world on Aug. 15, 2003). > > > > Thanks
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