query the remote server to see what configuration is used as followed :
ssh -p22 -G user@<IP_Address>
ssh -p22 -o KexAlgorithms=+diffie-hellman-group1-sha1 user@<IP_Address>
query the remote server to see what configuration is used as followed :
ssh -p22 -G user@<IP_Address>
ssh -p22 -o KexAlgorithms=+diffie-hellman-group1-sha1 user@<IP_Address>