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Remove insecure ciphers from GCE sshd configuration

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They were added for unclear reasons in r277263.  The current OpenSSH
defaults (7.5+) are reasonable, and do not include the insecure rc4 cipher:

                   chacha20-poly1305@openssh.com,
                   aes128-ctr,aes192-ctr,aes256-ctr,
                   aes128-gcm@openssh.com,aes256-gcm@openssh.com,
                   aes128-cbc,aes192-cbc,aes256-cbc

I think I recall there being a reason for a specific list of ciphers on GCE
at the time, but I do not recall what it was, and cannot find any
current GCE documentation of such a list.

So, just revert the explicit configuration and use sane openssh defaults.

PR:		230092
Submitted by:	Gustavo Scalet <gustavo.scalet AT collabora.com>
MFC after:	3 days
Security:	yes
This commit is contained in:
Conrad Meyer 2018-07-28 19:35:49 +00:00
parent bbc5c8ee32
commit 858178a142
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=336836
1 changed files with 0 additions and 1 deletions
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release/tools/gce.conf
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@ -66,7 +66,6 @@ EOF
ChallengeResponseAuthentication no
X11Forwarding no
AcceptEnv LANG
Ciphers aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc
AllowAgentForwarding no
ClientAliveInterval 420
EOF