topic Re: RSH Problem on Linux.... (Permission Denied error) in Operating System - Linux

RSH Problem on Linux.... (Permission Denied error)

Mangesh Yadav — Thu, 09 Aug 2007 10:25:57 GMT

Hi All,

I have configured rsh on linux box but i am getting error as Permission denied while doing rsh from other machines.If I place hostname in .rhosts than I am able to rsh.
Can anybody help in resolving this.
===========================
[root@aban root]# rsh -l root lnxr-moca-vm13 ls
Permission denied.
[root@aban root]#
===========================
following are the files which i have changed/configure.

[root@lnxr-moca-vm13 ~]# more .rhosts
+
[root@lnxr-moca-vm13 ~]#
[root@lnxr-moca-vm13 ~]# more /etc/hosts.equiv
+
[root@lnxr-moca-vm13 ~]#

Thanks in Advance.

Re: RSH Problem on Linux.... (Permission Denied error)

Steven E. Protter — Thu, 09 Aug 2007 11:08:09 GMT

Shalom,

If there is a conflict between dns hostname resolution and the .rhosts file this is an expected result.

See that all systems involve resolve all host names the same way. When they do, this problem should go away.

Take a look at /var/log/messages for additional diagnostic information and post snippets to help us help you out.

SEP

Re: RSH Problem on Linux.... (Permission Denied error)

Philip Gunter — Thu, 09 Aug 2007 20:01:26 GMT

Hi Mangesh,

I'd recommend that to don't use rsh at all. Its a very insecure protocol. You should use ssh which can be used as a complete replacement rsh.

Here is a very good write up of how to configure ssh.
http://www.redhat.com/docs/manuals/linux/RHL-8.0-Manual/custom-guide/s1-openssh-client-config.html

Cheers,
Philip.

Re: RSH Problem on Linux.... (Permission Denied error)

Joelmel Roche — Thu, 09 Aug 2007 22:39:28 GMT

If you want to use "+" in /etc/hosts.equiv or .rhosts, you need to set "promiscuous" in /etc/pam.d.

Please refer to following URL, search pam_rhosts_auth in the doc.
http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/pam.html

hosts_equiv_rootok - allow the use of /etc/hosts.equiv for superuser. Without this option /etc/hosts.equiv is not consulted for the superuser account.

Re: RSH Problem on Linux.... (Permission Denied error)

Justin_99 — Fri, 10 Aug 2007 14:13:41 GMT

You might also look at adding rsh/rlogin to the end of /etc/securetty depending on if you need passwordless or not.

Re: RSH Problem on Linux.... (Permission Denied error)

Alexander Chuzhoy — Sun, 12 Aug 2007 02:18:48 GMT

Since you're trying to access the other staion as root, in addition to .rhost you must also add the line "rsh" to /etc/securetty file.

Re: RSH Problem on Linux.... (Permission Denied error)

Mangesh Yadav — Mon, 20 Aug 2007 03:12:03 GMT