[Beowulf] passwordless rsh/ssh

Joe Landman landman at scalableinformatics.com
Wed Jun 22 11:54:28 PDT 2005

Yes.  What does /etc/hosts.deny have in it?  ALL: ALL ?

Also, rsh runs usually from xinetd.  in /etc/xinetd.d there should be an 
rsh, rlogin, and rexec file.  Do any of these have the word "yes" in the 
disable field?


David Mathog wrote:
>>>Did anyone know how to make rsh passwordless?
>>Read man hosts.equiv, or learn how to build a .rhosts file.  Or both.
>>Note that you may have to tweak PAM or other authentication controls to
>>get it to work -- linux has several distinct layers where one can BLOCK
>>passwordless logins or rsh in general, and they all have to be set
>>correctly for it to work.
> On a somewhat related note I recently discovered that the
> use of
>   rsh -l fred mandrake somecommand
> fails when the target is a Mandrake 10.0 machine, even when "fred"
> and whoever issues the command can both do rsh (via .rhosts and/or
> hosts.equiv) AND when the command works as expected when sent
> to a Solaris host. It failed for three different rsh
> implementations (two on linux, one on Solaris) leading me
> to suspect either some obscure  configuration error for
> in.rshd is getting in the way.  Either that or the in.rshd
> on this linux is broken.
> The in.rshd on linux comes from:  rsh-server-0.17-13mdk
> Anybody else seen this?
> Thanks,
> David Mathog
> mathog at caltech.edu
> Manager, Sequence Analysis Facility, Biology Division, Caltech
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Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web  : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax  : +1 734 786 8452
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