how to increase AllowUsers beyond 256 in sshd_config

Damien Miller djm at
Sun Dec 10 23:00:30 AEDT 2017

On Fri, 8 Dec 2017, LI Michael wrote:

> Hi,
> There are maximum 256 AllowUsers lines in sshd_config , something like
> AllowUsers  user1 at

Even if AllowUsers supports more than 256 entries, there is still a
fixed limit on sshd_config line length at 4 or 8 KB.

You can work around both using multiple "Match user" stanzas though.


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