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Post-it: PROXIMUS_AUTO_FON and TelenetWifree (Belgium) from GNU/Linux (or Windows 7) 2015-04-14

Posted by claudio in Uncategorized.
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4 comments

Wifi

Update 20160818: added Proximus RADIUS server.

The Belgian ISPs Proximus and Telenet both provide access to a network of hotspots. A nice recent addition is the use of alternative ssids for “automatic” connections instead of a captive portal where you login through a webpage. Sadly, their support pages provide next to no information to make a safe connection to these hotspots.

Proximus is a terrible offender. According to their support page on a PC only Windows 8.1 is supported. Linux, OSX *and* Windows 8 (!) or 7 users are kindly encouraged to use the open wifi connection and login through the captive portal. Oh, and no certification information is given for Windows 8.1 either. That’s pretty silly, as they use EAP-TTLS. Here is the setup to connect from whatever OS you use (terminology from gnome-network-manager):

SSID: PROXIMUS_AUTO_FON
Security: WPA2 Enterprise
Authentication: Tunneled TLS (TTLS)
Anonymous identity: what_ever_you_wish_here@proximusfon.be
Certificate: GlobalSign Root CA (in Debian/Ubuntu in /usr/share/ca-certificates/mozilla/)
Inner Authentication: MSCHAPv2
Usename: your_fon_username_here@proximusfon.be
Password: your_password_here
RADIUS server certificate (optional): radius.isp.belgacom.be

Telenet’s support page is slightly better (not a fake Windows 8.1 restriction), but pretty useless as well with no certificate information whatsoever. Here is the information needed to use TelenetWifree using PEAP:

SSID: TelenetWifree
Security: WPA2 Enterprise
Authentication: Protected EAP (PEAP)
Anonymous identity:what_ever_you_wish_here@telenet.be
Certificate: GlobalSign Root CA (in Debian/Ubuntu in /usr/share/ca-certificates/mozilla/)
Inner Authentication: MSCHAPv2
Usename: your_fon_username_here@telenet.be
Password: your_password_here
RADIUS server certificate (optional): authentic.telenet.be

If you’re interested, screenshots of the relevant parts of the wireshark trace are attached here:

proximus_rootca telenet_rootca

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Migrate a virtualbox VM to a bigger virtual disk 2012-03-18

Posted by claudio in Uncategorized.
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3 comments

20180531: Adapted following @gojun077’s comment for newer Virtual Box releases.

From the CLI type:

VBoxManage modifyhd /path/to/<disk>.vdi --resize <size in megabytes>

e.g.:

VBoxManage modifyhd /home/me/VMs/Win7x86.vdi --resize 32000

In case you have snapshots you have to merge them first. The disk will be resized but the Operating System won’t see it yet. You need to expand it within the Guest OS.
In Windows you can go to “Computer Management – Storage – Disk Management” and extend your disk. On Linux, you need to boot from a live distribution and extend it with a tool like gparted.

Split one flac (+ cue) file into separate tracks (update: including embedded cue files, ape) 2009-02-09

Posted by claudio in Uncategorized.
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flac

You may have backupped your music cd’s using a single flac file instead of a file for each track. In case you need to split the cd-flac, do this:

Install the needed software:

$ sudo apt-get install cuetools shntool

Split the album flac file into separate tracks:

$ cuebreakpoints sample.cue | shnsplit -o flac sample.flac

Copy the flac tags (if present):

$ cuetag sample.cue split-track*.flac

The full howto can be found here (aidanjm).

Update (April 18th, 2009):
In case the cue file is not a separate file, but included in the flac file itself do this as the first step:

$ metaflac --show-tag=CUESHEET sample.flac | grep -v ^CUESHEET > sample.cue

(NB: The regular syntax is “metaflac –export-cuesheet-to=sample.cue sample.flac“, however often the cue file in embedded in a tag instead of the cuesheet block).

Update (March 5th, 2017):
In case the source file is one unsplitted ape file, you can convert it to flac first.

$ sudo apt-get install ffmpeg

$ ffmpeg -i sample.ape sample.flac