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What is a Telnet

 

 TELNET ek protocol hai jo remote device ya server se communication karne ke liye use hota hai. Yeh primarily remote access provide karta hai network devices jaise ki routers, switches, servers, aur bhi bahut kuch!


TELNET ka kaam kaise hota hai:


1. _Connection Establishment_: Aap TELNET client (jaise Command Prompt, PuTTY) ka use karke remote machine ke IP address par connection establish karte hain.

2. _Login_: Aapka username aur password login ke liye use hota hai.

3. _Command_: Login ke baad, aap CLI commands enter karte hain jo remote devices (jaise routers ya servers) ko configure karte hain.


Example:


- Aap apne router ko remotely configure karna chahte hain.

- Aap TELNET client ko open karte hain.

- Aap connection establish karte hain router ke IP address ke saath command `telnet 192.168.1.1` ka use karke.

- Aap login karte hain aur router ko configure karte hain.


_Port_: TELNET ke liye default port hai _Port 23_.


_Security Note_: TELNET ek unencrypted protocol hai, jiske matlab data (including password) plain text mein transfer hota hai, jo ek security risk hai. Isliye, aajkal SSH (Secure Shell) zyada implement kiya jata hai, jo encrypted connections provide karta hai.


Summary: TELNET ek simple aur old protocol hai jo remote devices ko manage karne ke liye use hota hai, lekin SSH aajkal zyada use hota hai security concerns ke karan.


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