Sebastien Wains

categories: Asterisk Howto VoIP Tester under Asterisk 1.4.21.

categories: Asterisk Debian/Ubuntu Can someone explain why build-essential is a dependency of Asterisk under Lenny or Squeeze ?

categories: Apple/Mac OS Debian/Ubuntu Howto Tested under Debian Lenny 32 bits.

categories: Virtualization If you want to access the COM/serial port of your host machine from a KVM virtual machine in Proxmox VE, simply do the following : vim /etc/qemu-server/104.conf where 104 is the ID of the VM add “args: -serial /dev/ttyS0” to the…

categories: High-Availability Howto What you need : a working Nagios a GSM modem (this has been tested with a Siemens MC35i) or a cellphone with modem capabilities supported by Linux (I don’t have that) Gammu Set up the modem : Connect the GSM modem to the

categories: Scripts A little background : If you are not interested in the explanation behind this, skip to the script section.

categories: Debian/Ubuntu Howto Networks RADIUS Security Wifi WPA/WPA2 Enterprise on your wired or wireless network.

categories: Apple/Mac OS Howto Edit Jan 2010 : you can also run Time Machine backups on an AFP drive, which is faster (at least for me), see [http://blog.wains.be/post/afp-server-in-under-15-minutes-debian/](http://blog.wains.be/post/afp-server-in-under-1…

categories: Apache Howto Install Install Apache2 and SSL apt-get install apache2 openssl ssl-cert Enable the Apache modules we’ll be using : a2enmod ssl a2enmod dav_fs a2enmod dav Make sure you find the line “listen 443” somewhere in /etc/apache2/ports.co…

categories: DNS I seem to always forget how to query SRV records.. so here it goes : # host -t SRV _ldap.

categories: Howto Linux Proxy The setup : We run a virtualization server on a server in a datacenter (for example Proxmox VE), we only have 1 public IP available.

categories: Debian/Ubuntu Howto Linux GNBD is some kind of alternative to iSCSI and to a (much) lower extent to sshfs or other filesharing systems (NFS, Samba, etc.).

categories: Misc I spotted a Google car on the E42/A15 highway while driving from Namur to Liège this morning around 9AM.

categories: Linux SSH Yannick over at http://blog.uggy.org always comes up with interesting and valuable tips.

categories: Tools I finally gave Dropbox a try and it’s awesome !

categories: Apple/Mac OS Hardware Misc Today I connected a MacBook Unibody (13" and 2,4 Ghz CPU) into a 40" LCD HDTV (Sony Bravia KDL40L4000) using a MiniDisplay Port to DVI connector, a DVI to HDMI converter and a 5 meter long HDMI cable.

categories: DNS Howto Wifi The following article has been tested on Debian Etch (server) and Debian Lenny and Mac OS X (clients).

categories: Linux SSH I’m talking about the banner displayed BEFORE connecting, not the MOTD By default : <code>$ ssh root@server *************************************************************************** NOTICE TO USERS This computer system is the priva…

categories: Hardware VoIP I got myself a new cell phone, the Nokia E71.

categories: Apple/Mac OS I’ve been running Mac OS X at home for the past two months.

categories: Hardware VoIP THE BORING PART : For the impatients out there, just skip to “Mandatory warnings”.

categories: Bash Linux Tools Lately I installed rsnapshot on my lappy to get my files backed up on my home server during the night, in case the laptop is on.

categories: Linux Tools If you want to batch rename files under Linux, check out PrefixSuffix.

categories: Asterisk Debian/Ubuntu Linux VoIP I just compiled zaptel-modules for Debian Lenny (Kernel 2.6.26 i386) That package contains the ztdummy module.

categories: Linux Tools I heavily rely on the following tools to manage my music.

categories: Debian/Ubuntu Gnome Linux Networks VPN I’m under Debian Lenny at work.

categories: Linux Tools NAME pv - monitor the progress of data through a pipe SYNOPSIS pv [OPTION] [FILE]... pv [-h|-V] DESCRIPTION pv allows a user to see the progress of data through a pipeline, by giving information such as time elapsed, percentage com…

Etch' categories: Debian/Ubuntu Linux NFS clients under Debian Sid (unstable) are not able to browse NFS shares running on a Debian Etch server.

categories: Linux Tools **Under Debian : ** apt-get install fdupes Then : fdupes -r /home/user > /home/user/duplicate.txt -r : recursive Output of the command goes in duplicate.txt fdupes will compare the size and MD5 hash of the files to find duplicates

categories: Hardware Linux If your partition is /dev/sda1 e2fsck -cc /dev/sda1 From the man pages : <code> -c This option causes e2fsck to use badblocks(8) program to do a read-only scan of the device in order to find any bad blocks.

categories: Linux Tools stow : Stow, a software installation management utility for Linux that offers a number of advantages over the tried-and-true Red Hat and Debian package management systems.

I use SSH local port forwarding on a daily basis but I rarely use remote port forwarding.

Categories: Apache Debian/Ubuntu Howto Linux RHCE Security VPN I’m really into OpenVPN these days, see my two previous posts about it: Setting up OpenVPN for your road warriors: http://blog.wains.be/post/a-vpn-for-remote-users-with-openvpn/ Setting up a V…

categories: Networks VPN This article quickly explains how to set up a VPN for your remote users based on OpenVPN in around 5 minutes.

categories: Debian/Ubuntu DNS Howto Linux Networks Tested under Debian Etch This is the network configuration of our DHCP/DNS server Hostname : router.static.example.org WAN interface (eth0) : 192.168.99.254 mask 255.255.255.0 LAN interface (eth1) : 172.3…

categories: Networks Security VPN Edit : between two or MORE subnets.

categories: Debian/Ubuntu Linux NSLU2 Enable bootlog in /etc/default/bootlogd : BOOTLOGD_ENABLE=Yes Logs go under /var/log/boot Useful on systems with no monitor attached..

categories: Debian/Ubuntu Linux Put a package on hold : echo "${package} hold" | dpkg --set-selections Remove the hold : echo "${package} install" | dpkg --set-selections where ${package} is the package name Knowing the status of your packages : dpkg --ge…

categories: Debian/Ubuntu Linux Create or edit /etc/apt/apt.conf with this content : APT::Default-Release "stable"; Edit your APT source list /etc/apt/sources.list as the following (adapt to your favorite mirrors) : <code># unstable deb http://ftp.debian.…

After receiving a bottle of Jack Daniels from my buddy Seb in reward for helping him with several stuff… …today in the mail, another reward, I received this… Network Security Hacks Second Edition by O’Reilly Thanks to Rich Camp from Oakhurst, California!

categories: Bash Linux A bit of explanations : $ help disown disown: disown [-h] [-ar] [jobspec ...]

categories: Bash Linux In this post I was describing how one can share a bash session using a named pipe.

categories: Linux find / !

categories: SSH SSH connections made from behind my Linksys WAG54G NAT gateway like to die after idling for something like 5 minutes.

categories: Asterisk NSLU2 VoIP A FULLY WORKING ASTERISK SIP PBX RUNNING WITH ONLY 6 MODULES LOADED !

categories: Howto Linux Misc First of all, enable POP on your gmail account : settings Forwarding and POP/IMAP Enable POP for all mail (even mail that’s already been downloaded) Then, the configuration for fetchmail and procmail : You need to use procmail…

categories: Linux If you’re trying to upgrade a kernel remotely, there’s always a risk of losing access to the machine because of a kernel panic when rebooting.

categories: Howto Linux I’ll explain how to setup Request-Tracker (RT) on Debian Etch.

categories: Debian/Ubuntu Linux Install cron-apt : # apt-get install cron-apt Edit its config files : # vim /etc/cron-apt/config You basically just need this in the config : MAILTO="user@example.com" MAILON="upgrade" cron-apt runs every night at 4AM (see…

categories: Linux By default, sudo keeps the password in “memory” for 5 minutes (at least under Ubuntu).