topic Re: Problems with remsh in Operating System - HP-UX

Problems with remsh

dictum9 — Wed, 28 Dec 2005 17:24:11 GMT

WhenI try to run remsh, I get the following error message. Why is this happening. I have the right entry in /etc/inetd.conf.

# remsh sbda1
rlogin: login/tcp: Unknown service

Re: Problems with remsh

Rajeev Shukla — Wed, 28 Dec 2005 17:42:27 GMT

Its because of /etc/services file.
See that you have proper entries in /etc/services for
exec 512/tcp # remote execution, passwd required
login 513/tcp # remote login
who 513/udp whod # remote who and uptime
shell 514/tcp cmd # remote command, no passwd used

Check that none are commented.

Cheers
Rajeev

Re: Problems with remsh

dictum9 — Wed, 28 Dec 2005 17:58:15 GMT

Are you talking the local /etc/services or the /etc/services on the machine I am trying to connect to?

Re: Problems with remsh

Rajeev Shukla — Wed, 28 Dec 2005 18:11:06 GMT

Sorry for the confusion.
I am talking about the /etc/services file on the remote machine where you are trying to remsh

Re: Problems with remsh

dictum9 — Wed, 28 Dec 2005 18:22:01 GMT

Thank you. This is most helpful.

Now, the problem is, I cannot remsh as root. Even if I give the right login information. It just keeps asking for the password. I think there is a variable somewhere that I can set to allow root logins via remsh, is that so?

Re: Problems with remsh

Rajeev Shukla — Wed, 28 Dec 2005 18:47:34 GMT

for remsh to work as root without prompting for password you need to put the hostname (source hostname) either in /etc/hosts.equiv file or .rhosts file in the home directory of root user on the destination server.

Re: Problems with remsh

dictum9 — Wed, 28 Dec 2005 20:47:57 GMT

That was the problem. I knew about $HOME/.rhosts but I put in a FQDN. It did not work with the FQDN. When I added the simple hostname, it worked. DNS issue.

Re: Problems with remsh

dictum9 — Wed, 28 Dec 2005 20:57:12 GMT

OK, another issue - remsh works, but rlogin doesn't. What's a valid entry in the /etc/services file?

rlogin: login/tcp: Unknown service

Re: Problems with remsh

Rajeev Shukla — Wed, 28 Dec 2005 21:04:24 GMT

All the ones listed above i.e
exec 512/tcp
login 513/tcp
who 513/udp whod
shell 514/tcp cmd

And if you are using Kerberos authentication then
klogin 543/tcp
eklogin 2105/tcp

Should be enabled on the destination server in /etc/services.

Re: Problems with remsh

James R. Ferguson — Wed, 28 Dec 2005 21:11:54 GMT

Hi:

Aside from '/etc/services' make sure that you have a line like this in '/etc/inetd.conf' :

login stream tcp nowait root /usr/lbin/rlogind rlogind

If it is commented-out; un-comment it; and re-read 'inetd' thusly:

# inetd -c

Regards!

...JRF...

Re: Problems with remsh

Muthukumar_5 — Thu, 29 Dec 2005 03:27:34 GMT

Check all services in /etc/services related with remsh and rlogin.

exec 512/tcp # remote execution, passwd required
login 513/tcp # remote login
shell 514/tcp cmd # remote command, no passwd used

Three must be there on remote machine.

You have to setup .rhosts file in remote server and local server in account names $HOME directory as,

Local machine - root user $HOME directory

cat .rhosts
remotemachine root

Remote machine - root user $HOME directory

cat .rhosts
remshinsitiatingmachine root

Check /etc/inetd.conf file for remsh support as,

login stream tcp nowait root /usr/lbin/rlogind rlogind

If you are going to kerberose then,
klogin stream tcp nowait root /usr/lbin/rlogind rlogind -K

Then reconfigure inetd (aemon) as,

inetd -c

That is it.

-Muthu

Re: Problems with remsh

Arunvijai_4 — Thu, 29 Dec 2005 03:37:23 GMT

What type of error you are getting with regard to rlogin ? Check with /var/adm/syslog/syslog.log.

You can check the following threads for troubleshooting,

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=120080
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=922831

-Arun