Archive for July, 2006
Es viernes 28 de octubre. Me levanto a las 6.00AM, listo para coger un vuelo rumbo a San Francisco, pasando primero por el aeropuerto de Londres. Me ducho, me tomo un par de yogures, reviso que todo está listo, y me dirijo con mis padres hacia la terminal 4 de Barajas. El trayecto en coche [...]
Extremadura, software libre, libertad y brecha digital
1 Comment Published by Felipe Alfaro Solana July 27th, 2006 in PersonalA raíz de la reciente decisión de la junta de Extremadura de utilizar software y formatos libres, que he visto comentada en un artículo del blog de Enrique Dans y en Menéame, me he decidido también a hacerme eco de la noticia y opinar libremente sobre ella.
La referencia del consejo de gobierno celebrado el día [...]
Xen network configuration and multiple VLANs
18 Comments Published by Felipe Alfaro Solana July 21st, 2006 in Networking, VLAN, XENXen networking is powerful enough to allow for extreme customization. Although the default networking configuration is usually more than enough for simple scenarios, it can fall short when trying to support multiple guests standing on different VLANs.
In this short article, I describe the steps needed to configure Xen to attach itself to multiple VLANs using [...]
Linksys, OpenWRT and multiple VLANs
14 Comments Published by Felipe Alfaro Solana July 19th, 2006 in Firewall, Linux, Networking, OpenWRT, Security, VLANThe Cisco Linksys WRT54G/GS/GL is made up of a six-port configurable switch, a standard Ethernet controller (usually a Broadcom controller named eth0) and a Wireless controller (usually a Broadcom controller named eth1).
The following diagram tries to illustrate the different components that made up the Cisco Linksys and how are they interconnected:
[...]
Resetting Cisco IOS configuration
0 Comments Published by Felipe Alfaro Solana July 17th, 2006 in Cisco, NetworkingYou can use the following Cisco IOS commands to reset the Cisco configuration back to factory defaults:
write erase
This will clear the startup-config and fill it up with factory defaults.
delete flash:vlan.dat
Most Cisco IOS switches keep VLAN configuration data — like VTP protocol data, active VLANs, and so on — in flash memory, in a file called [...]
I’ve found an article describing how to install the OpenType font used to generate the Ubuntu title.
Basically, it’s as easy as running:
$ sudo apt-get install ttf-ubuntu-title
Después de tanto tiempo, creo que ya es hora de hacerlo oficial.
El pasado día 10 de marzo entregué mi CV traducido al departamento de recursos humanos de Google en Suiza y, de esa forma, comenzó casi sin darme cuenta el proceso de selección para formar parte de su plantilla en la sede de Zurich, Suiza. [...]
Paseando hoy por la Web del Menéame, me he encontrado con un artículo que comenta cómo un grupo de música dice que Bajar un disco en Internet es como robarle la carne a un carnicero. No voy a entrar en si este comentario es una necedad, un disparate, una aberración, falta de solidaridad o de [...]
QEMU and TUN/TAP networking
3 Comments Published by Felipe Alfaro Solana July 5th, 2006 in Linux, Networking, QEMU, UbuntuUsing TUN/TAP networking with QEMU grant guest machines access to some or all networks reachable by the host machine. This also allows accessing services offered by guests machines from any other host.
To be able to use TUN/TAP network, instead of directly configuring the physical Ethernet network device — my Realtek 8169 Gigabit Ethernet, which in [...]
QEMU and transparency problems when using Xgl
0 Comments Published by Felipe Alfaro Solana July 5th, 2006 in QEMU, UI, XglWhen running QEMU 0.8.1 under Novell’s Xgl Xserver, the QEMU window black background turns transparent, which makes extremely difficult to read anything on it.
Searching on the Internet, I found a workaround which consists on launching QEMU with the XLIB_SKIP_ARGB_VISUALS variable set to 1. For example:
XLIB_SKIP_ARGB_VISUALS=1 qemu -hda …
I hope this will be fixed in a [...]
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