Big blue button RSL Error 1 of 4 / Error #2032

If you have this kind of problem you can read this article or simply:

cd /var/www/bigbluebutton/client/
sudo wget http://fpdownload.adobe.com/pub/swz/flex/4.5.0.20967/mx_4.5.0.20967.swz
sudo wget http://fpdownload.adobe.com/pub/swz/flex/4.5.0.20967/rpc_4.5.0.20967.swz
sudo wget http://fpdownload.adobe.com/pub/swz/tlf/2.0.0.232/textLayout_2.0.0.232.swz
sudo wget http://fpdownload.adobe.com/pub/swz/flex/4.5.0.20967/framework_4.5.0.20967.swz

This is a problem that may occur when the flash client tries to locate the RSL files (local intranet situations) and by downloading them in the bbb’s folder, the flash can safely failover to that location.

Create user and db in MySQL for various apps

Working on a portal which requires the integration of various opensource applications, I had to install quite a few systems that require mysql databases. In order to keep a safe separation between these systems, one should create different users that will have access only to the specific database. This is a simple way to prevent losing all your databases in case of  the mishap when an attack is successful on a system and sql commands pass directly to the database (sql injection etc). This is a how-to create the new user, the new database and set the requested permissions.

Reset mysql 5.1 root pass

I had to install a couple of dbs on a mysql server which refused to recognize me as its root… I kept receiving the following not-so-friendly message:

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

As it turns out, something was messed up during the installation and mysql did not recognize the given root password (mistype perhaps?). Anyway, I had to reset the pass, and this is how I did it.

Install bigbluebutton 0.8 (BBB) on Ubuntu 11.04

I recently installed big blue button version 0.8 on Ubuntu 11.04 and I came up with some errors while installing. This post is the log of my actions that solved my problem.

Word to CHM source code

I have just finished updating an old buggy sourceforge project and decided to share code and binaries. More over, I have written a nice post on why I had to update the project and how to use it to convert word to mobi files for kindle but thanks to Windows Live Writer (which crashed :-( ) I lost it all!

Securing Asp.net applications by hidding response header

Although it’s fairly obvious that a website is running asp.net (through session cookie and the viewstate) you may protect your server by removing a few response headers that advertise the iis and the asp.net version. The most common response headers you should remove are the following:

• X-Powered-By:ASP.NET
• X-AspNet-Version:*.*.*
• Server:Microsoft-IIS/*.*

Silverlight 1.1 Alpha Refresh patch to run after expiration date

Once upon a time I won a Silverlight coding competition by writing a simple game in Silverlight 1.1 Alpha Refresh. A few weeks ago a beta tester of my game requested to play with it, once more. Installing the redistributable (thanks god I keep an archive of these because I couldn’t find it on Microsoft’s site) I came up with a message box that said that this version has expired (the alpha version should expire on 1st nov 2007).