PUzzling sshd behaviour
Andreas Klemm
andreas at freebsd.org
Mon Sep 8 13:30:04 PDT 2003
On Sun, Sep 07, 2003 at 02:55:10AM +0100, Bruce M Simpson wrote:
> On Sat, Sep 06, 2003 at 10:54:35PM -0300, Daniel C. Sobral wrote:
> > Bruce M Simpson wrote:
> > >On Fri, Sep 05, 2003 at 08:46:46AM -0700, Kris Kennaway wrote:
> > >>The fact that sshd requires reverse IP resolution is well-known
> > >>behaviour. It's probably the most common FAQ about sshd ("Why is my
> > >>login taking 60 seconds to present the password prompt?").
> > >
> > >But what about:
> > > VerifyReverseMapping
> > > Specifies whether sshd should try to verify the remote host
> > > name
> > > and check that the resolved host name for the remote IP
> > > address
> > > maps back to the very same IP address. The default is ``no''.
> >
> > AFAIK, that means the reverse mapping result will not be held against
> > you. :-)
>
> This sounds like a bug. Does anyone else agree?
Yes and I really needed this functionality in a project for 12 Suns...
But it didn't work as expected from the description.
And for me a functionality like being able to prevent reverse lookup
would be completely logical ...
Result was to create about 20 /etc/hosts entries on every sun, to
prevent this 60 seconds timeout for our Out Of Band login via VPN
and from sun to sun etc etc
Andreas ///
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