DefCamp 2011 Brasov,Romania

Valic —  September 14, 2011 — Leave a comment

What is Defcamp ?

DefCamp is a national initiative dedicated to the development of digital skills in young adults drawn by IT security, by creating an offline simulation environment
that allows knowledge exchange between underground security specialists, the
academical and corporational environment in Romania.
DefCamp is specialized in the presentation of some technical information
regarding security and insecurity of the real and virtual environments.

Why would I want to join ?

* If white, black or gray represent more than the classical significance;
* If you want to broaden your horizons regarding your environment’s (in)security;
* You want to find out what are the latest trends in IT security;
* You want to learn how to secure or unsecure the virtual environment;
* You like IT security;
* You want to battle side by side with other people who share the same passion in a forensics competition;
* You want to meet other people that speak the same language in a non-formal environment;
* You want to meet different famous people in person;
* You want to meet specialists for developing technical groups for the research of IT security.

When will it take place ?

The event will be scheduled between the 30th of September and the 2nd of October 2011 and will take place in Bran, Brasov county.

Rsync is often used for backup systems, with options such as:

-A --acls       : preserve the ACL, if used

-X --xattrs     : preserve extended attributes, if used

-H --hard-links : detect and preserve hard links

-a --archive    : resources and preserve the usual attributes: symbolic links, devices and special files,
user and group ownership, permissions and schedules

In addition to these stock options, rsync has many other.

Each has its own recipe, but I’d like to share two useful features :

Continue Reading…

If users have access to the files on your server, but you don’t want they to be able to execute commands, you can limit access to  sftp only.

Add a user to your system as normal with a password and then run the following command:

usermod -s /usr/lib/sftp-server username

Then change add the following to /etc/shells to make it a valid shell:

echo '/usr/lib/sftp-server' >> /etc/shells

Now this user can only run the sftp server as shell



Log Files:
Log files are critical to managing Apache.
Managing these logs can provide advance security warnings, provide detailed information in terms of who is visiting your site and where they are coming from and can help you troubleshoot the use of your server resources. The two main log files are listed below from a Debian Squeeze Server.
The access_log file gives you information on who is using your web server and the error_log provides information for troubleshooting.


How to View Apache2 Logs:

View apache2 logs with tail and head:

The basic tail command will show the tailend of the log.

tail /var/log/apache2/access_log

You can use the -n option to view a specific number of lines  like in this example:

tail -n100 /var/log/apache2/access_log

Head is the opposite of tail.

Continue Reading…

An update to Debian GNU/Linux 6.0 is scheduled for Saturday, June 25th, 2011.
As of now it will include the following bug fixes. They can be found in “squeeze-proposed-updates”, which is carried by all official

Please note that packages published through are not listed, but will be included if possible.
Some for the updates below are also already available through “squeeze-updates”.

The point release will also include a rebuild of debian-installer.

Miscellaneous Bugfixes:

A complete list of all accepted and rejected packages together with rationale is on the preparation page for this revision:


If there are any issues, please don’t hesitate to get in touch with the Debian Release Team at “[email protected]”.