SSH Unable to Negotiate Errors

SSH Unable to Negotiate Errors

If connecting from client to the old Operating system server we might get error related to matching algorithms.

To fix it Connect from client OS user which is trying to connect and run below.

{

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 'KexAlgorithms '

ssh -Q kex | tr '\n' ',' | sed -e 's/,$//'; echo

} >> ~/.ssh/config

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