mac os sierra upgrade 후 오류 정리

문제

ssh 접속 시 아래와 같은 문제가 발생한다.

key change할 방법이 없단다...

Unable to negotiate with x.x.x.x port 22: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1

Or:

1	Unable to negotiate with x.x.x.x port 22: no matching host key type found. Their offer: ssh-dss

It seems that Sierra has finally made the switch to using OpenSSH v7.2 (El Capitan used OpenSSH v6.9) his means some of the older, less secure algorithms are no longer enabled by default. It’s a pretty easy fix, though. You just need to tell OpenSSH to allow these algorithms.

해결

/etc/ssh/ssh_config에 다음 2줄을 추가한다.

1 2	HostkeyAlgorithms +ssh-dss KexAlgorithms +diffie-hellman-group1-sha1

참고

http://goodbyecli.com/macos-sierra-beta/