How to protect EIGRP router from receiving unsigned routing updates?

EIGRP short of Enhanced Interior Gateway Routing Protocol is a routing protocol used to select the best suitable route for packets with in a network. Basically EIGRP is the enhanced version of IGRP protocols and developed by Cisco Systems. EIGRP uses a bandwidth and delay method to calculate the metric of a network route.

Today tip help you to enable authentication of enhanced interior gateway routing protocol packets to protect routing table. In this case, we will try to configure two different routers with routing protocol EIGRP and then perform the authentication between them using the IP authentication key-chain eigrp interface command.

Follow the network topology of two different class network in given figure:

Configuration to Enable EIGRP on Router A

In global configuration Mode:

A (config# router eigrp 20

(Enable EIGRP protocol and 20 is Autonomous number).

A (config-router)# network 40.0.0.0

(Advertised router A Serial Network 40.0.0.0).

A (config-router)# network 210.100.10.0

(Advertised router A Ethernet Network 210.100.10.0).

Configuration to Enable EIGRP on Router B

In global configuration Mode:

B (config) # router eigrp 20

(Enable EIGRP protocol and 20 is Autonomous number)

B (config-router) # network 40.0.0.0

(Advertised router B Serial Network 40.0.0.0).

B (config-router) # network 210.100.30.0

(Advertised router B Ethernet Network 210.100.30.0 ).

Now Configure EIGRP Authentication on Router A

In global configuration Mode:

First create the key chain with the name professional used in this example.

A (config) # key chain professional

Now set the key number 1 used in this example.

A (config-keychain) # key 1

Now set the key string for the key name imperial used in this example.

A (config-keychain-key) # key-string imperial

A (config-keychain-key) # end

Now specify the interface that you want to configure EIGRP message authentication.

A (config) # interface serial 0

A (config-if) # ip authentication key-chain eigrp 1 professional

A (config-if) # ip authentication mode eigrp 1 md 5

A (config-if) # end

Now Configure EIGRP Authentication on Router B

In global configuration Mode:

First create the key chain with the name professional used in this example.

B (config) # key chain professional

Now set the key number 1 used in this example.

B (config-keychain) # key 1

Now set the key string for the key name imperial used in this example.

B (config-keychain-key) # key-string imperial

B (config-keychain-key) # end

Now specify the interface that you want to configure EIGRP message authentication.

B (config) # interface serial 0

B (config-if) # ip authentication key-chain eigrp 1 professional

B (config-if) # ip authentication mode eigrp 1 md 5

B (config-if) # end

Crack BIOS Password !!!

Forgot BIOS Password ?

Do the following :

1. Open the CPU
2. Now, observe the motherboard.
3. You notice a coin like silver Battery(3V).




----------------------------------------- NOTE --------------------------------------------------------
This battery is 24 x 7 power supply for the BIOS, which is used to run the system clock will the main power is off. It also initiates the booting process when power is switched on.
-----------------------------------------------------------------------------------------------------------

4. Remove the battery from the motherboard.
(It is safe to remove the Battery)
5. Wait 30 seconds and place the battery back on the motherboard.
6. Now, when you start your system you won't be prompted for the BIOS password.

Enjoy !!!
------------------------------------ CAUTION -----------------------------------------------
1. Perform on your own risk !
2. You have to set the time of your computer when you start again.

How to move your mouse cursor without mouse?

You can control your mouse pointer with keyboard keys in all windows versions. When your mouse stops working, you can enable this keyboard feature to complete your important work. This keyboard mouse can performs all tasks same like a normal mouse.

Follow the given steps to activate the keyboard mouse:

To edit this feature, first you should log onto your computer with administrative rights.

To activate this feature, press Alt+Shift+NumLock keys at once and you will receive a small MouseKey box.

How to Convert a FAT Partition to NTFS

To convert a FAT partition to NTFS, perform the following steps.

Click Start, click Programs, and then click Command Prompt.

In Windows XP, click Start, and then click Run.

At the command prompt, type CONVERT [driveletter]: /FS:NTFS.

Convert.exe will attempt to convert the partition to NTFS.

NOTE: Although the chance of corruption or data loss during the conversion from FAT to NTFS is minimal, it is best to perform a full backup of the data on the drive that it is to be converted prior to executing the convert command. It is also recommended to verify the integrity of the backup before proceeding, as well as to run RDISK and update the emergency repair disk (ERD).

Convert.exe will attempt to convert the partition to NTFS.

How to increase the processor power of your computer?

How to increase the processor power of your computer?

To increase the performance of slow computer, you can force your system to free up the idle tasks that are running in the background and sharing processor power. This end tasks method force the computer to devote its full processor resource to what you want it to do.

Follow the given steps to end the idle tasks:

• To enable this feature, you will need to be logged into your computer with administrative rights.

• Click Start button and click on Run option.

• In the Run box, type the command Rundll32.exe advapi32.dll,ProcessIdleTasks command and press Ok button.

• 

• Here system will take some time to end the background idle tasks.