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remsh and Login incorrect

Frequent Advisor

remsh and Login incorrect

Hi Guys,

I have two systems Prod1 and Prod2 and I need to use remsh between them to execute some command using root account, I have done the following
*at prod1 server .rhosts file has been created with prod2 root line
*at prod2 server .rhosts file has been created with prod1 root line
*at prod1 /etc/hosts.equiv file has been created with prod2 root line

But when I am trying to execute the following command
prod2# remsh prod1 -l ls /etc

I got the following error
remshd: Login incorrect.

Please advice
Sajjad Sahir
Honored Contributor

Re: remsh and Login incorrect

Dear Team

please check /etc/inetd.conf and /etc/services
to start remshd from the inetd daemon in a non-secure environment, the configuration file /etc/inetd.conf must contain an entry as follows:

shell stream tcp nowait root /usr/lbin/remshd remshd

please check /etc/services file also

thanks and regards

Sajjad sahir
Trusted Contributor

Re: remsh and Login incorrect

Dear dba,

This is the way I have and it works
in prod1
#cat .rhosts
prod2 root

in prod2
#cat .rhosts
prod1 root

I am able to do remsh prod1 ls /tmp ( from prod2) and the other way also works ok.

and the perms
ls -ls .rhosts
16 -rw-rw-rw- 1 root sys 742 Mar 6 13:02 .rhosts
Frequent Advisor

Re: remsh and Login incorrect


thanks for your replay but I have been checked the /etc/services as well as /etc/inetd.conf and they are seems fine
and also .rhosts has been configured right

please find the attachment

note that files at prod1

Steven Schweda
Honored Contributor

Re: remsh and Login incorrect

> prod2# remsh prod1 -l ls /etc

Uh, who is user "ls"?

man remsh

Look for "-l".

What happens with a command like this?:

prod2# remsh prod1 ls /etc

> please check /etc/services file also

Please let /etc/services rest in peace.
Mel Burslan
Honored Contributor

Re: remsh and Login incorrect

.rhosts file's permissions might be the problem. r-commands are very finicky in that sense.

Make sure they are located in root's home directory, owned by root:sys and the permissions of these files are 400 on both sides and give a rest to hosts.equiv and /etc/services as they do not play a role in what you are trying to accomplish.

On a side thought, as any sensible unix admin, I also should advise you not to use rlogin, remsh and rexec commands due to their insecure communication structure. Consider using ssh and trusted key based authentication as soon as possible.
UNIX because I majored in cryptology...