macOS Sierra with SSH

20

Sep

macOS Sierra with SSH

macOS Sierra with SSH

If you upgraded to macOS Sierra (beta or the new publicly available today 10/20/16), you might have issues with SSHing into servers – especially Linux. That’s because newer versions of Linux and Mac require better encryption.

The default has always been 3des, but you need to use at least aes128-ctr. Here’s an example of the old SSH command in Terminal:
ssh -c 3des -2 -l root 101.101.101.101 -p 22 ;exit

Now, you’d need to update that to:

ssh -c aes128-ctr -2 -l root 101.101.101.101 -p 22 ;exit

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