Date: Fri, 16 Oct 2009 20:50:58 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Aflatoon Aflatooni <aaflatooni@yahoo.com> Cc: freebsd-questions@freebsd.org Subject: Re: Security blocking question Message-ID: <4AD8CEA2.10902@infracaninophile.co.uk> In-Reply-To: <99934.58817.qm@web56206.mail.re3.yahoo.com> References: <526808.11391.qm@web56207.mail.re3.yahoo.com> <4ACFB17A.1080400@infracaninophile.co.uk> <628151.64600.qm@web56204.mail.re3.yahoo.com> <4AD820FE.4050808@infracaninophile.co.uk> <99934.58817.qm@web56206.mail.re3.yahoo.com>
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Aflatoon Aflatooni wrote:
> I have the following in my pf.conf:
>=20
> ext_if=3D"bge0"
> # Public Services -- smtp, http, pop3s
> tcpPubServices =3D "{ 25, 80, 995 }"
> set timeout { interval 10, frag 30 }
> set timeout { tcp.first 120, tcp.opening 30, tcp.established 86400 }
> set timeout { tcp.closing 900, tcp.finwait 45, tcp.closed 90 }
> set limit { states 10000, frags 5000 }
> #set loginterface none
> set optimization normal
> set block-policy drop
> #set require-order yes
> #set fingerprints "/etc/pf.os"
> set skip on lo0
> # Normalization: reassemble fragments and resolve or reduce traffic amb=
iguities.
> scrub in all
>=20
> pass out all
> block in log all
> table <sshBruteForce> { }
^^^ this needs to be 'table <sshBruteForce> persist' or the OS will delet=
e it
if it's empty.
> block in quick from <sshBruteForce> to any
> pass in on $ext_if inet proto tcp from any to any port $tcpPubServices =
flags S/SA synproxy state
> pass in on $ext_if inet proto tcp from any to any port ssh modulate sta=
te (source-track rule max-src-nodes 8 max-src-conn 8 max-src-conn-rate 3/=
60 overload <sshBruteForce> flush global)
>=20
>=20
> And I have tried to make a lot of ssh connections to the box and killin=
g them with ctrl-c or bad-password but nothing gets added to the table. T=
here isn't anything in the log either. How would I go about figuring out =
what is wrong?
Usually if you leave your machine connected to the internet, some awfully=
helpful people in China or some other far off place will test it for you
within a day or so...
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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