Secure Shell (SSH) And Their Functions

SSH

Secure Shell, it is a protocol for secure remote administrations and others secure network services over an insecure network such Public Network over an internet.
It is also known as, Cryptographic Network, that’s way all SSH traffics are encrypted.
SSH is widely used for managing systems, applications remotely enabling them to login to another Computer, i.e; Server over an network through either Command line execution or GUI like PuTTY tool to move files from one system to another.
SSH uses Client - Server model for connecting ssh client application which is an end, where the session is displayed and ssh server where is an end, where the session is runs.

SSH has 2-versions, which is 1’st version is, SSH-1 was released in 1995 by, Tatu Ylonen researcher at Helsinki University Of Technology and later he started SSH Communication Security, Cyber Security vendor based in Finland.
And SSH-1 was founded some flaws, so it should be deprecated for not safe to use.
After introducing SSH-2, it’s the version of currently in use of SSH protocol.
SSH-2, It was adopted as a standard track specification by IETF, i.e; Internet Engineering Task Force, in 2006.
No Exploiting Vulnerability in SSH-2, information leaked by Edward Snowden, in 2013 suggested by NSA, i.e; National Security Agency.

SSH was created to replace insecure terminal emulation or login programs such as Telnet, rlogin(Remote login) and rsh(Remote shell).
SSH enables the same functions of local system such login and running terminal session on remote system.
SSH also replaced the file transfer protocols such as File Transfer Protocol( FTP) and rcp(Remote copy).
Example:-

UserName@SSHserver.example.com, like ssh username@learn.selfmade.ninja

This command will cause the Client to connect Server named[server.example.com] using UserName for user ID.
First time of connection will be take some steps, after that of 1’st time of connection, it will automatically connected HOST to SERVER, because it stores the host-key to the local machine.

It will presents all Data Centers, SSH has default with all platforms such as Unix, Linux, Mac servers.
It is used to secure many communication between Host to Server such as,
Remote Access to Resources
Remote execution of commands
Software Patches and Updating
Other Administrative or Managements. @sibidharan

Regards,
Sudharchanan.

cyber_looper Awesome bro 💯❤️

Ramesh267 Thank you bro❤️