when trying to connect to an old ssh server .. the message


comes: no matching cipher found. Their offer: des,3des-cbc

Solution:

ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 -c 3des-cbc <ip>


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other options -> in user ssh config file
example:
cat /root/.ssh/config
Host 192.168.1.100
Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc

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global in server ssh config file something like that:
#Legacy changes
KexAlgorithms +diffie-hellman-group1-sha1
Ciphers +aes128-cbc

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