sshd. "UseDNS no" ignored?

David Adam zanchey at
Thu Nov 30 07:34:01 PST 2006

On Wed, 29 Nov 2006, Dmitry Pryanishnikov wrote:
>    I'm still wondering why OpenSSH is _so_ inferior to SSH.COM's ssh2
> (which is also open-source)?

Is it really open-source? I couldn't find any reference to source
downloads or licensing terms on It mentions OpenSSH
as an open-source alternative.

> In the later product the following line in
> /usr/local/etc/ssh2/sshd2_config:
>  	ResolveClientHostName no
> _actually_ prevents DNS reverse lookups by the sshd2 (just checked it,
> my test machine has ssh2-nox11- installed from ports). It's not
> the only option which present in ssh2 while absent in OpenSSH, second
> very useful one is:
>  	AuthInteractiveFailureTimeout   10
> which make SSH-password-guessing robots to give up after the first attempt ;)

You might like to suggest these features to the OpenSSH developers!

Of course, when space is at a premium, Dropbear is the answer to your SSH

David Adam
zanchey at

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