Networking

Ubuntu is one of those polarising technologies; Its really easy to use on a recreational basis, or as part of a institution/business wide rollout, but heartbreakingly awkward to use ‘alone’ within an entrenched business setting. One such setting is that of Queen’s University; the only form of secure remote access that is made (quietly) availiable is through a Citrix XenApp gateway. Great in theory; everyone can take a slice of a virtualized desktop, do whatever they need to do, and that processing power and memory can be easially reappropriated when they’re done. Unfortunately, in an effort to be ‘secure’, you HAVE to use Windows, and you HAVE to have Internet Explorer installed, and you HAVE to install the propitiatory XenApp client. ...

I had an incident recently where the Windows 7 side of my laptop connected easily to an open AP, but the Ubuntu 10.04 (or 9.04, tried both) wouldn’t, with the Intel Iwlagn drivers reporting in syslog a deauth (reason=6), basically the card spoke too soon. I eventually found the solution. After several weeks of asking the same question everywhere I could think of (as well as emailing Intel…) I found the answer a lot closer to home, from a PhD student ^H^H^H^H^H^H^H Graduate in my University over LinkedIn (Ironically enough, I’m actually working with him on my Final Year Project next year… Good stuff to come :D ) ...

Just incase you forget how to fix this the easy way: Enable mod_rewrite for URL voodoo; (Or any module replacing the rewrite ) $sudo a2enmod rewrite $sudo service apache2 restart Remember to fiddle with /etc/apache2/sites-available.*< \pre> and change "AllowOverride none" to "all" in any places that you're having trouble with rewritten URL's

NumberQuotes Gives Perspective to Your Statistics, Is Great for Presentations [Statistics] The Menaissance: The Death of the Metrosexual and the Rise of the Retrosexual Jesus Loves Me? World’s Most Stunning Data Centers Jason takes us through exploit a web application, uploading a… IF YOU DON’T STUDY Recursively remove all empty directories Top 10 Atheism Quotes Dynamic lighting effects in Canvas Digg: 4000% Performance Increase by Sorting in PHP Rather than MySQL ...

** NS-3 Appears to have a staggeringly steep learning curve so I hope these posts help out someone else (or me, when i forget all this in a month). Running off a virtualised Ubuntu 9.10 system, the prerequisites I installed were all the ones listed here. (And i removed some out of date packages) sudo apt-get install bison bzr dia doxygen flex g++ gcc gdb graphviz imagemagick libgoocanvas-dev libgtk2.0-0 libgtk2.0-dev libsqlite3-dev libxml2 libxml2-dev mercurial python python-dev python-kiwi python-pygoocanvas python-pygraphviz sqlite sqlite3 tcpdump texi2html texinfo texlive texlive-extra-utils valgrind ...

I hadn’t used Mercurial before so I thought it might be a good idea to leave a reminder for me and anyone else who comes across it… For tidyness, I do all of my dev-stuff (Subversion, Mercurial, CVS, Git etc) under ~/src and only take root privileges when its needed; any good makefile should relocate the necessary files for you at the ‘make install’ or equivalent point. **Update:**This article was picked up by the guys at DevCheatSheet.com and I’m really honoured to be included in a site that I’ve been dipping into over the years, so if you need any kind of cheat sheet or quick reference, I highly recommend checking them out. Anyway… ...

I had been looking at this years Google Summer Of Code google group and saw the list of organisations that are getting involved. While i was alooking at it, I knew i didn’t want to even consider the big boys (I’m looking at you, Debian, Drupal, KDE, Apache, X.Org, etc), they’re too big to get my teeth into, and I’m currently in the throws of ‘WHAT THE HELL AM I GOING TO DO MY FINAL YEAR PROJECT ON!!! ’ (For any Americans, that means ‘dissertation’). ...

So I have a piece of coursework for a CS module I’m taking at Queen’s University Belfast and one of the focal points of it is the recent RockYou! SQL-injection breach that released 32million passwords into the internet, and I thought I’d have a closer look at that list. I ‘acquired’ the password list from your regular neighbourhood tracker, and thought I could walk through the process of getting a probability-sorted password dictionary. ...

While working on an IDS Solution for a client, I came across Untangle, and I loved it so much that I pulled out an old box and loaded it up as my office firewall. One thing that is lacking, from my perspective (at least in the ‘free’ edition) is the firewall interface; Untangle uses an IpTables based firewall, but doesn’t replicate the usual INPUT FOWARD OUTPUT rulebase. I think that in 90% of usecases for Untangle, this isnt a problem, but I found it a little bit alien to have portfowarding hidden in the Networking config pane, and firewall separatly. ...

Take one Dual-Boot laptop, with three partitions: /dev/sda1:Windows File System /dev/sda2:Linux File System /dev/sda3:Data Partition I already had Dropbox installed on the Windows side and didn’t want to have things duplicated on the linux side, problem is Ubuntu currently does not mount internal drives automatically on boot, so every time I fired up Ubuntu, I had to re-mount the drive, password and all. Easy enough fix: Make a new /etc/fstab entry for the shared drive and define a mount point. ...