l29ahZl29ah-x201 ~ ‰ ssh root@192.168.1.243 Unable to negotiate with 192.168.1.243 port 22: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1 l29ahZl29ah-x201 ~ ‰ ssh -Q kex | grep diffie-hellman-group1-sha1 diffie-hellman-group1-sha1