ZFS is a great filesystem. Amongst its many features, it has snapshots. Let’s see how to use them.
Continue reading Sun Solaris 10 : Creating snapshots with ZFS
Securing automated rsync over SSH
Quoting the RSYNC homepage : “rsync is an open source utility that provides fast incremental file transfer.”
To make rsync both secure and automated (i.e : non-interactive), you can use SSH as the transport and set up a key pair. This is what will be discussed in this post, along with a few improvements.
OpenSolaris 2008.05 released today
OpenSolaris 2008.05 is released today, you can grab it from the OpenSolaris website.
The distribution is a bootable CD which will let you try it before installing. It includes most of the big hits of Solaris 10 (zfs, dtrace, containers and so on).
If you never tried Solaris or OpenSolaris, this might be a good kick start !
SSH slow to connect to a Solaris 10 host
If you experience a slow SSH connection to a Solaris 10 host while after connection everything works fine, then read on !
Continue reading SSH slow to connect to a Solaris 10 host
Ubuntu 8.04 + IBM T40 = No sound
If you upgraded your Ubuntu on an IBM T40 Laptop only to find out that there is no sound anymore, you’re not alone in this 😉
Follow the bug report for more information !
Edit 2008-05-11 : As of today I don’t have this problem anymore … update your machine if you haven’t yet !
Edit 2008-06-22 : Sound vanished again … I really need to look into this before this drives me crazy !!
Sound seems to come back and vanish unpredictably reboot after reboot …
Network Security : Being the Man In The Middle using ARP
This post presents what is the attack known as “ARP Man in the Middle” which is basically a way for a malicious user to sniff network traffic on a fully switched network. If you don’t know this attack yet, go on reading.
Continue reading Network Security : Being the Man In The Middle using ARP
OpenBSD : Release 4.3 is out
The twice-a-year release of OpenBSD is out today (More details on Undeadly). You can buy the CD set or get it by FTP (in this case consider donating to the project as CD sales are the main source of income to the project).
Enjoy.
VLAN + OpenBSD : a simple configuration
This posts gives a short intro about VLAN and a simple configuration sample on a DELL PowerConnect 5224 switch with an OpenBSD machine.
Dell PowerConnect switches – Password recovery procedure
If you are looking for a procedure to reset the password of a Dell PowerConnect switch, you’ll find it at the Dell support forum in the following thread : PowerConnect Password Recovery Procedure for managed switches.
As far as the 5224 is concerned, you mostly have to hold Ctrl-F from the power-on till the end of the boot of the switch, which will bring the “reset to factory ?” question and solve the problem of the lost password.
The User Guide for the 5224 is available online.
MySQL : binary log files
MySQL uses the so called binary log files to implement master/slaves replication.