Integrity means that SSH will ensure there will be no data change while data travels from one system to another system.Encryption means once user have authenticated to access a remote system, then data transferring requests happenning between remote system and user will all be encrytped so that while request is going through network anyone cannot just take it and see what’s inside it.If in case you try to log in to a remote server via SSH, then SSH first will ask for login details like username and password, if correct details are entered then only SSH will allow user to access remote server. Authentication means determining someone’s identity.Typically SSH Protocol follows three steps for establishing a secured connection between two end points => Authentication, Encryption and Integrity. SSH is a protocol, a kind of specific program which allows for secured communication across a network. All communications between clients and servers are securely encrypted and protected from modification. Users then run SSH client programs, typically on other computers, to make requests of the SSH server, such as “Please log me in”, “Please send me a file” or “Please execute this command”. An SSH server program, typically installed and run by a system administrator, accepts or rejects incoming connections to its host computer. SSH architecture involves SSH client and Server client. Meaning there are less security vulnerabilities which can be taken advantage of by some hacker to acess data being transferred over network. SSH automatically encrypts the data before sending it to a network and decrypts data when it arrived at destination location through the network. What is SSH(Secure Shell)? SSH is a powerful, secured software for transferring data across a network. In order to overcome, this security threat SSH(Secure Shell) program was made. But usually these programs(ftp, telnet, rsh) are not secured and files being transferred on network can be easily compromised and someone can access those files while these are being transferred. Similarly there exists programs like telnet for remote logins and rsh for doing remote execution of commands on a computer. How you can access those files from home? Best option is to use some program to connect to computer at workplace from home, for this purpose programs like ftp(File Transfer Protocol) can be used. But what if you come back to home from work and wanted to continue work on some files while being at work, but those files are only stored in your computer at work. Nowadays people usually have different computers at work or home.

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