Linux : HowTo check the DNS server entries?

You can simply use that commands to find your DNS servers on a Linux/Unix/BSD based OS

by usign: # cat /etc/resolv.conf

or

using: # less /etc/resolv.conf

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Security : fail2ban and dependencies

I like to install fail2ban on my Server for securing ssh and Asterisk .

Installed: fail2ban.noarch 0:0.8.4-23.el5

Dependency Installed: shorewall.noarch 0:4.0.15-1.el5       shorewall-common.noarch 0:4.0.15-1.el5 shorewall-perl.noarch 0:4.0.15-1.el5  shorewall-shell.noarch 0:4.0.15-1.el5

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Security : Cisco Password7 Crack

The utility is the Cisco Password 7 Crack. It is able to decrypt Cisco’s encrypted “type 7″ passwords. “Type 7″ password encryption is used when “service password-encryption” has been enabled. Unfortunately, the cryptographic algorithm is not very complex or secure

CRACK HERE

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Cisco : Generate Crypto Keys via ASDM

To generate the key pair from ASDM go to Configuration, then select the Device Management tab. Expand Certificate Management and go to Identity Certificates. Click Add and select the Add a New Identity Certificate radio button.  Then click New.

In the Add Key Pair dialog box, take the defaults and  click Generate Now.

Don’t forget to go to Device Management > Management Access [...]

Ubuntu : Fix The Screen Messed up at Start-up and Shutdown

If you’re running Ubuntu Maverick with Nvidia Official drivers, and your screen messed up at starting up and shutting down the system. You can try following method to fix the problem.

Step 1: First, open up a terminal window from Applications -> Accessories menu. Run this command to install preparing tools:

sudo apt-get install v86d [...]