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Difference between Rlogin and SSH

Difference between Rlogin and SSH

The remote login (rlogin) and secure shell (SSH) commands provide a way for you to connect to other computers on the network. They both offer a means of authentication and security, but there are some key differences between the two that you should be aware of before choosing which one to use. This post will take a closer look at those differences, so you can decide which one is best for your needs.

What is Rlogin?

Rlogin is a UNIX command that allows users to remotely login to another computer system. It uses the rsh protocol for communication between systems and is typically used over a network connection.

  • Rlogin requires an account on the remote system in order to login. Once logged in, the user has access to all of the files and commands that are available on the remote system.
  • Rlogin is a useful tool for accessing remote systems, but it can also pose a security risk if not properly configured. For example, rlogin allows users to login without providing a password, which could allow unauthorized access to the system.
  • In addition, rlogin sends all data over the network in clear text, which could allow eavesdroppers to view sensitive information. As a result, rlogin should be used with caution and only when absolutely necessary.

What is SSH?

SSH (Secure Shell) is a network protocol that allows for secure communications between two devices. SSH uses a public-key cryptography system in order to establish a secure connection, and it is often used in conjunction with other protocols such as SFTP (Secure File Transfer Protocol) and SCP (Secure Copy). SSH is commonly used in order to connect to remote servers in order to execute commands or transfer files, but it can also be used for other purposes such as creating a VPN (Virtual Private Network). SSH is a versatile tool that can be used in many different ways, and it is an essential part of many IT infrastructures.

Difference between Rlogin and SSH

  • Rlogin and SSH are two popular protocols for logging into remote machines. Rlogin uses clear text passwords, which means that your password can be intercepted by a third party if they are on the same network as you. SSH, on the other hand, uses encryption to protect your password.
  • In addition, Rlogin only allows you to log into a machine that you have an account on, whereas SSH can be used to tunnel other traffic through an encrypted connection.
  • As a result, SSH is generally considered to be more secure than Rlogin. However, Rlogin is typically faster and simpler to set up, so it is still widely used in many environments.


So, what is the difference between Rlogin and SSH? The primary difference is that with SSH, all communication between the client and server is encrypted, whereas, with Rlogin, only the username and password are encrypted. This makes SSH a more secure option for logging in to remote servers.

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