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Networking

Configure Cisco Console Password

July 26, 2011 Networking Jesin A 1 Comment

networking category thumbnail

A quick tutorial on how to configure a console password on Cisco routers and switches. A console password is asked for only when connecting to the Cisco device via console port so you will NOT be asked for this password when connecting to your Cisco router/switch via telnet or SSH.

Enter the following commands for configuring a console password

Router>enable
Router#configure terminal
Router(config)#line console 0
Router(config-line)#password consolepw
Router(config-line)#login
Router(config-line)#exit
Router(config)#service password-encryption

Replace the word consolepw with your preferred password. The service password-encryption command stores the password in encrypted format. Yuo can use these commands for configuring a console password on a Cisco switch too.

Tags: cisco

Configure Cisco Routers for SSH Access

July 24, 2011 Networking Jesin A 1 Comment

networking category thumbnail

In the previous article we how to configure Cisco routers and switches for telnet access and in this article we’ll see how to do the same with SSH. SSH is always preferred because it is very much secure than telnet. A quick intro on SSH, it expands to Secure Shell, listens on port 22, uses public key cryptography technique for encryption. Because SSH uses keys we need to generate one on the router. To connect using SSH from a windows system a third party software such as putty us needed, but for Linux users a SSH client is built into all distributions.Continue Reading…

Tags: cisco, ssh

Configure Cisco Routers and Switches for Telnet Access

July 21, 2011 Networking Jesin A 7 Comments

networking category thumbnail

I wanted to start from the basics as this is the first article under the category Networking. A Tutorial on How to Configure Cisco Routers and Switches for Telnet Access. Lets start with some info about the Telnet protocol – Telnet uses port 23, this protocol is used for remote administration of devices through commands. Take note that Telnet sends commands as plaintext over the network so don’t use telnet this unless you’re on a testing environment or 101% sure your network is safe from intruders.Continue Reading…

Tags: cisco

CCNA Exam Experience

July 20, 2011 Networking Jesin A 4 Comments

networking category thumbnail

A couple of months after the RHCE exam I decided to prepare for the CCNA (Cisco Certified Network Associate) exam. I had already attended CCNA classes at an institute here so I just had to prepare for the exam. It wasn’t easy as I thought, I used the CCNA: Cisco Certified Network Associate Study Guide 6th Edition by Todd Lammle, Wiley Publishing book to learn for the CCNA exam. One look at the “Written Lab” section at the end of end of each chapter made me realize my position, I wasn’t even half prepared for the exam. So my journey of exam preparation started.Continue Reading…

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