Answer Posted / Ajeet Chaudhary
SSH v1 (Secure Shell version 1) and SSH v2 (Secure Shell version 2) have several differences, the main ones being:
1. Security: SSH v2 is more secure than SSH v1 due to improved encryption methods, elimination of known vulnerabilities in SSH v1, and support for stronger encryption algorithms.
2. Protocols: SSH v1 uses the SCP (Secure Copy Protocol) and SFTP (SSH File Transfer Protocol) for file transfer, while SSH v2 uses SFTP exclusively.
3. Key exchange: SSH v1 uses Diffie-Hellman Group 1 for key exchange, which is considered weak, whereas SSH v2 supports stronger Diffie-Hellman groups.
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