79. Difference between Telnet vs SSH | Telnet & SSH | telnet/ss protocol | CCNA 200-301 Full Course

Telnet and SSH are both network protocols used for remote communication with devices or servers, but they serve different purposes and have distinct security characteristics. Let's explore their differences and discuss why SSH is the preferred choice for secure communication.

Purpose:

Telnet: Telnet is a simple text-based protocol used for remote terminal access to devices, such as routers, switches, and servers. It sends data, including login credentials, in plain text, making it insecure for sensitive information.

SSH (Secure Shell): SSH is a secure, encrypted protocol used for secure remote access, file transfers, and tunneling. It provides a secure way to authenticate and communicate with remote devices, encrypting data to protect it from eavesdropping.

Security:

Telnet: Telnet does not encrypt data, including login credentials. This makes it susceptible to interception by malicious actors who can capture and read the transmitted data. It is generally considered insecure for anything other than testing or troubleshooting in a controlled environment.

SSH: SSH uses strong encryption algorithms to secure the communication between the client and server. It provides secure authentication methods, such as public key authentication, making it much more resistant to eavesdropping and unauthorized access.

Authentication:

Telnet: Telnet typically uses plain text username and password for authentication. This method is vulnerable to brute-force attacks and eavesdropping.

SSH: SSH supports various authentication methods, including password-based authentication, public key authentication, and multi-factor authentication (MFA). Public key authentication is highly recommended for enhanced security.

Port Number:

Telnet: Telnet traditionally uses port 23 for communication.

SSH: SSH typically uses port 22 for communication, although it can be configured to use a different port for added security.

Recommended Use:

Telnet: Telnet is generally not recommended for use in untrusted networks or the internet due to its lack of encryption and security vulnerabilities. It may still be used in isolated, controlled environments for debugging or legacy systems.

SSH: SSH is the recommended choice for secure remote communication, especially when accessing systems over untrusted networks like the internet. It is widely used for system administration, remote access, and secure data transfers.

#Telnet
#SSH
#NetworkSecurity
#RemoteAccess
#Cybersecurity
#SecureShell
#ProtocolComparison
#DataEncryption
#AuthenticationMethods
#ITSecurity
#SecureCommunication
#InternetSecurity
#NetworkProtocols
#TechExplained
#Infosec101
#SSHvsTelnet
#SSHSecurity
#TelnetVulnerabilities
#SecureNetworking
#dataprotection

*******************************************
Find Us On:
****************************************
Connect With Cybersecurity Expert Mohit Yadav On:-
****************************************
Craw Security Official Website
Contact Us:-
1st Floor, Plot no. 4, Lane no. 2, Kehar Singh Estate Westend Marg, Behind Saket Metro Station
Saidulajab New Delhi - 110030
Call Us : 011- 40394315