Jacek strikes back

Contributed by jose on 2003-06-28 from the more-oreillynet-goodneess dept.

Grégoire writes: "There is a new installment of Jacek's excellent series "Securing small networks with OpenBSD". This one is titled "Changes in pf: Packet Filtering" (06/26/2003). This time we'll look at packet filtering rules, which kick in after packets have been scrubbed and (optionally) redirected to another IP address or port with NAT rules. "

Jacek's steady stream of articles is really building into quite the plethora of useful data. Keep it up!

(Comments are closed)

Comments

By Anonymous Coward () on 2003-06-28 04:46

This is the actual link to the article!
By Anonymous Coward () on 2003-06-28 15:37

It's worth noting that this article refers to OpenBSD 3.2 and as such _some_ parts of the article are no longer true when using OpenBSD 3.3 or later.

Thanks for a good article, Jacek :-)
By Jacek Artymiak () jacek@artymiak.com on 2003-06-29 21:39 http://www.devguide.net/books/buildingfirewallswit

I will keep on writing about the packet filter for another couple of installments of this series. Then I will switch to other OpenBSD security subjects that many of you are asking me about.
But I will not be abandoning PF and will soon be publishing a book on OpenBSD and PF .
Jacek
By Anonymous Coward () on 2003-06-29 22:50

Modulate state part of the article describes
modulate state for incomming tcp packets.
I wonder if it make any sense, because it make
sense only for outgoing packets for me.
Comments
1. By Anonymous Coward () on 2003-06-30 04:45
  
  ISNs are generated by both sides , regardless of which one initiated the connection. So, if you want to modulate the sequence numbers of your machines, you need to apply "modulate state" to every connection.

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