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Tag: OpenBSD

Packet Inspection Using Divert Sockets

July 12, 2010 OpenBSD, OS, Software 5 comments

For a long time ago, I did not write about OpenBSD which remains one of my favorite operating system. The last version (4.7) was released in May and introduced, as usual, a lot of interesting changes. OpenBSD comes of course with it’s own firewall called pf (“packet filter“). Plenty of

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Fsck’ing OpenBSD File Systems on a Dedibox

February 2, 2009 Hardware, OpenBSD, OS Leave a comment

Dedibox is a French collocation service part of the Iliad group. They rent dedicated servers at a very good price. In the standard offer, servers can be installed with standard operating systems: UNIX or Windows. “UNIX” includes all major distributions like Ubuntu, CentOS, Fedora, Slackware or Gentoo). I maintain my

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Network Monitoring and Accounting Using OpenBSD

October 31, 2008 Net, OpenBSD Leave a comment

“Know your Network!” All network administrators have to know what append on their networks: what are the flows of information between hosts, to Internet, between VLANs. This is a requirement for security or provisioning purposes but also for business when the amount of IP traffic has to be billed to

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BSDanywhere 4.3 is out!

October 17, 2008 OpenBSD, Software Leave a comment

It’s always useful to have a Live CD with us and much more if it’s a CD of my favourite UNIX flavor! BSDanywhere 4.3 is out!

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Follow Multiple Files with OpenBSD “tail”

March 18, 2008 OpenBSD, Software Leave a comment

On UNIX, the tail[1] command displays the last ten lines of a file by default. But there are many other options: Especially the “follow” flag (-f) which displays all new lines appended to the watched file. This a very basic but efficient monitoring tool. The GNU version of tail introduced

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