Page Rank -- Updated?

Posted by coldtobi | 15 May, 2008, 00:23 I just noticed the PR now jumped to "4" on some pages on my site.... Not that I care so much, but as it jumped from 2 to 4 in days I'm wondering if Google updated their topsecret PR-algorithm again?



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Debian OpenSSL vulnerability: Check your installation/keys

Posted by coldtobi | 14 May, 2008, 09:57

As I learned today by an announce at the debian security list, there was a "patch" against security in the OpenSSL Library. The patch is debian specific, so applies only to debian and clones (e.g Ubuntu). However, it was sufficient to create the keys on a affected machine, so everyone could be affected, if the keys where transfered to a third machine.

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Thecus N2100: Testing a kernel prior flashing

Posted by coldtobi | 17 Apr, 2008, 23:56

Update July 2009: Please see here for addtional informations.

Occasionally there is a new kernel out for the Thecus N2100, debian flavoured.

And because of personal experience, it is good to test it before flashing it to the embedded flash.
In my case, I needed that one time, as the new kernel would not boot for whatever reason.
The trick is, that you can load the kernel into RAM and execute it from there.

Of course, you can also use it to "test" the Debian installer, before actually overwriting the original firmware.
(BTW, if you only want to test a newly created RAM disk, this is also like testing a kernel -- the RAM disk would
be also flashed, so you can test your modification without any risk, if you run the it "out of RAM"

As another benefit -- if you decided not to use debian but the stock firmware -- this might become handy if you need a
rescue system. Yes, you could use the debian installer also for a rescue enviroment, and as thecus is "only" using Linux,
there are not problems to be expected.

Last but not least, in the unlikely event that you didn't like the Debian experience you can upload the original firmware back into
the Thecus.

Enough talking, Lets get started!

(Please note, that I assume some Unix knowledge in this article. I do not advise Linux novices to install debian on their NAS. For completeness, if this screws it up, this is your problem not mine, as this is soley your responsibility.)

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Small bugfix for Recaptcha

Posted by coldtobi | 8 Apr, 2008, 10:45

I found a small bug for ReCaptcha: If you do not select a style, the generated Java Script code will be invalid and therefore the lanugage selection will not work.

Just select a style, for example "red" and everthing works fine.

There also some issues with several templates (for example MinimaPlus) : These issues are CSS related and show themself by a "broken bottom border" of the widget. I am currently trying to figure out how this can be solved without the need of a new CSS file to be included.

If you need a intermediate solution, please mail me for instructions.

 

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Updated ReCaptcha

Posted by coldtobi | 1 Apr, 2008, 18:20

I updated the recaptcha plugin with some new very nice features.  coldtobi's Recaptcha plugin screenshot, white layout
 

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Preventing PHP RFI with Apache's ReWriteRules

Posted by coldtobi | 6 Mar, 2008, 17:21 In the last time, there a lots of -- well -- tries to hijack the server via a attack method called "Remote File Inclusion". RFI is a exploit that works if a script writer forgets about sanitize incoming http request strings. For more details, look up RFI in Wikipedia, as they have a nice article about that.

But there is an easy way to get block these silly attemps, as they have a common pattern to look for. At least if you have access to your .htaccess, the module mod_rewrite and a Apache around.
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Installing Debian on the Thecus N2100 -- PART 4 -- Installing Debian (2)

Posted by coldtobi | 5 Mar, 2008, 23:56

The third part stopped with creation of the raid array. As this is a very time consuming process, which takes some resources to complete, this is a good point where to make a break and just let it finish. However, this is not really required, as rebuilding the RAID is also perfectly done by the the OS while you can still use it. But if you stop the procedure – by a reboot, as a example – the kernel will restart the process from the beginning. So take this as a hint, that you maybe want to check the progress before you finally reboot / power down.

Just  repeating my self, please note, that this VOIDS YOUR WARRANTY. So the usual disclaimer apply: You brick, you repair it. I do not recommend installing linux on the box, if you are not sure you can handle it. Linux requires more hand-on than the GUI -- you won't have a GUI anyway -- but on the other side, it reveals the real power.

Table of Contens

  1. Part 1: Get Prepared
  2. Part 2: Installing the Installer
  3. Part 3: Installing Debian I
  4. Part 4: Installing Debian II (this article)
  5. Part 5: Fine tuning after the installation
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