RE: ipf stopped working on 5.3

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To: "'John Fitzgerald'" <jjfitzgerald@gmail.com>, <freebsd-security@FreeBSD.org>
Date: Tue, 25 Oct 2005 14:28:09 -0700

  I had this same problem and found out there is a parimeter that needs to
be added to the kernel config that was not needed previously. When I get
back to my office, I will look it up and send it to you.

Chris Odell

-----Original Message-----
From: owner-freebsd-security@freebsd.org
[mailto:owner-freebsd-security@freebsd.org] On Behalf Of John Fitzgerald
Sent: Tuesday, October 25, 2005 10:33 AM
To: freebsd-security@FreeBSD.org
Subject: ipf stopped working on 5.3

I've had ipf working on a few 5.3 servers for quite awhile. Not too long ago
some developers had to do some coding work and were coming from dynamic
IP's. I (reluctantly) opened up SSH to the world. Immediately I started
seeing the attacks where bots of some sort would try to break in with a
variety of different users.

So, I (thought) I closed it up again and told the developers to use a
dedicated proxy. They did, but I realized that I hadn't actually closed
things off. I was still getting attacked. I had tried, but ipf suddenly
wasn't working. Whenever I would change the firewall rules and ipf -D and
the ipf -E -f /etc/my.rules it would simply return:

1:ioctl(add/insert rule): No such process

I didn't have the time to look into it at the time, but am now trying to
figure it out. Ipf is obviously not working and I don't know why. I have
tried recompiling the kernel a myriad of different ways. With/without ipfw,
with/without ipsec, etc. All to no avail. Is this a bug, did I get hacked?

I have googled this quite a bit and the only thing that I found was possibly
a buildworld scenario where something got updated and it doesn't work now. I
didn't install src so I'm a bit out of luck on that one.

FreeBSD 5.3-RELEASE
OpenSSH_3.8.1p1 FreeBSD-20040419, OpenSSL 0.9.7d 17 Mar 2004

Cheers,
JJ
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• Previous message: Fernando Gleiser: "Re: ipf stopped working on 5.3"
• In reply to: John Fitzgerald: "ipf stopped working on 5.3"
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• Reply: John Fitzgerald: "Re: ipf stopped working on 5.3"
• Reply: Nathan Goulding: "Re: ipf stopped working on 5.3"
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