HOW TO INSTALL SSH SERVICE ON REDHAT ?

Secure shell (SSH) can be used to provide similar functionality as telnet, but it is much more secure. Telnet is consider insecure mainly because it sendsusername and password information in clear text. Therefore, telnet should be replaced with SSH.

How to install TELNET services on Linux?

Telnet is a Terminal emulation protocol that allows remote access to a system. Telnet can also refer to software which can be used by a client to remotely connect to and configure operating systems and network devices

TELNET uses TCP port 23 by default

HOW TO INSTALL HTTP SERVER ON REDHAT ?

The hypertext transfer protocol (HTTP) was originally designed for transferring word wide web (www) documents and has been extended to transfer other types of files as well. Its most common use is transferring web pages between a web browser and a web server.

HTTP uses TCP port 80 by default.

What is DHCP ?

What's DHCP? And why it's recommended to use it?

•  Imagine that you're working as a System Admin for a large company with 500 desktop computers. you need to set to each desktop computer IP address, subnet mask, default gateway, DNS servers, and other network settings. How could you do that?  If you'll try to perform this task manually you're probably going to waste a lot of time on sitting on each computer 5-10 minutes, beside time, you can for example accidentally enter wrong IP address to

What is DNS ?

WHAT IS DNS?

• Domain Name System (DNS)
• Domain Name System (DNS) is a system for naming computers and network services that maps those names to network addresses and organizes them into a hierarchy of domains.
• DNS naming is used on TCP/IP networks, such as the Internet and most corporate networks, to locate computers and services by using user-friendly names.

What is OSI model ?

What is OSI model ?

• Open Systems Interconnect Model.
•  It is defined by ISO (International Organization for standardization).
• Idea behind to develop OSI model is to avoid propriety systems and allow interoperability between two between vendors.
• Useful tool for network troubleshooting.
• It is made up of seven layers.

How to Break or Recover Router’s Password ?

Step 1 : Setting Up a password to router

How to Backup and Restore IOS of router?

How to Backup IOS of router?

Step 1 : Assigning IP address to router

Mounting Removable devices

Mounting Removable media

• Mounting integrates a foreign file system into the main tree.
• Before accessing media must be mounted.
• Before removing media must be unmounted.
• In GNOME and KDE Environments devices auto mount under /media/
• In Console, root can manually mount devices under /mnt/

Red Hat Package Managemant

Red hat package management (RPM)

• It helps us to keep track, Install, Uninstall and update software packages of your red hat system.
• RPM files can contain binaries or source code.
• It works with command line interface or GUI but in this it is limited.

Booting Process Of a Cisco Router

Booting Process of a Cisco Router.

In this article I am going to show you, how the booting process of Cisco router will take place and which is very important to know for every technical persons which are in networking field. So let’s start... Booting process of a cisco router are as follows step by step.

Who are Hackers ?

 Who are hackers? Hackers are very intelligent individuals with their excellent computer skills, with programming and having with the ability to create and explore into the computer’s software and hardware. Some of the hackers have the hobby to collect the information like how many computers are in the network and how they can compromise. Some of the hackers do hacking with malicious intend behind their escapades, like stealing credit card information, email passwords, social security numbers, business