tree e8a5d71ea79eae0a030489e05aba914500d051fc
parent 3cddcd6758340b7620ed7f7895422317fab91e45
author James Myers <jfmyers9@gmail.com> 1484283170 -0800
committer Han-Wen Nienhuys <hanwen@google.com> 1491821778 +0000

ssh: support MaxAuthTries on ServerConfig

This change breaks backwards compatibility.

MaxAuthTries specifies the maximum number of authentication attempts
permitted per connection. If set to a negative number, the server will
allow unlimited authentication attempts. MaxAuthTries defaults to 6 if
not specified, which is a backwards incompatible change. On exceeding
maximum authentication attempts, the server will send a disconnect
message to the client.

This configuration property mirrors a similar property in sshd_config
and prevents bad actors from continuously trying authentication.

Change-Id: Ic77d2c29ee2fd2ae5c764becf7df91d29d03131b
Reviewed-on: https://go-review.googlesource.com/35230
Reviewed-by: Han-Wen Nienhuys <hanwen@google.com>
Run-TryBot: Han-Wen Nienhuys <hanwen@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>