nslookup and ifconfig are two well-known tools for configuration the network of Unix/Linux hosts and checking whether DNS is working properly.

ifconfig was part of the 4.2BSD distribution in 1983 for the first time and quickly became the standard tool for network configuration - even commerical Unices like Solaris or …

It's doubtless that Ubuntu is one of the most innovative Linux distributions - it made Linux desktops becoming more user-friendly and - thanks to this - raised the acceptance for end users in the last years.

Currently the gossip factory is working overtime again - some reliable sources announced that some big strategy …

If you install and configure a Postfix mail server for relaying mails using an external smarthost you might be puzzled about the following error message:

1Mar 19 17:00:22 hostname01 postfix/smtp[2003]: warning: SASL authentication failure: No worthy mechs found

The reason for this issue can be really trivial - in my …

Recently I had problems with installing Oracle 11gR2 Express Edition on CentOS 6.4.

The installation of the RPM package worked but the database configuration crash with the following error:

1# service oracle-xe configure
2...
3"Database Configuration failed.  Look into /u01/app/oracle/product/11.2.0/xe/config/log …

Currently I'm implementing a IPSec tunnel between my and another flat. After my first plan, using an already existing Raspberry Pi as IPSec gateway, fizzled after plently of failed tries I decided to implement a router-to-router solution.

The center of my network is a ALIX.2D13 which is used as IPCop to offer DNS, NTP …

Sometimes it might be necessary to mount Linux file systems under Windows.

This can be done very easily using a tool named "DiskInternals Linux Reader". This tool is able to mount the following file system types in read-only mode:

• ext2/3/4
• reiserFS/reiser4
• HFS(+)
• UFS2

Be noticed that the tool only mounts …

Using Kerberos it is possible to "kerberize" services and applications to enhance security. Compared to classical username/password authentification Kerberos uses time-limited tickets which are applied per-user for authentificating against services and applications.

In combination with SSH the encrypted …

After the original release date and 6 other dates were canceled, Fedora 18 was released today.

Time to have a look at the anticipated operating system. The latest version of the RedHat supported project introductes some new features which might be also included in the upcoming version of Red Hat Enterprise Linux and …