LINUX BOX UNABLE TO SSH COMEWARE SWITCHES (5.2/7.1) There is issue observed that the Linux Box unable to ssh the Comware 5.2 and 7.1 switches. It is showing the follwoing error: Unable to negotiate with 192.168.10.254 port 22: no matching key exchange method found. Their offer: diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 These SSH compatibility issues, we can simply temporarily enable all legacy cryptography methods that our SSH client currently supports. We can check the supported method from the Linux Box: ssh -Q mac ssh -Q kex ssh -Q key ssh -Q cipher We need to fix the nagotiation method using the follwing command: { echo -n 'Ciphers ' ssh -Q cipher | tr '\n' ',' | sed -e 's/,$//'; echo echo -n 'MACs ' ssh -Q mac | tr '\n' ',' | sed -e 's/,$//'; echo echo -n 'HostKeyAlgorithms ' ssh -Q key | tr '\n' ',' | sed -e 's/,$//'; echo echo -n '