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Full Discussion: Rsh passwordless entry
Operating Systems Linux Ubuntu Rsh passwordless entry Post 302887894 by rbatte1 on Tuesday 11th of February 2014 12:06:14 PM
Old 02-11-2014
You need to open a simple telnet session from A to B first, then look at where the login is from:-
Code:
ServerA telnet ServerB
Login: username
Password: password

Welcome to ServerB!

ServerB who am i
username    pts/t0    aaa.bbb.ccc.ddd

Now you can use this information as it is displayed. Hopefully aaa.bbb.ccc.ddd is a name rather than an IP address as you have included it in /etc/hosts (ServerB will have done a lookup) but really all you need to do is to add the address into your .rhosts file in your home directory rather than the global /etc/hosts.equiv which permits wider access. Esure that this file is RW to yourself and no-one else:-
Code:
ServerB chmod 700 .rhosts

Then exit the telnet session to ServerB and from ServerA again, try:-
Code:
ServerA rsh ServerB hostname

Hopefully it will display the hostname of ServerB and you can then try variations on the command. Quoting and knowing which shell with expand metacharacters or interpret variables can be quite tricky though.

Have a go and let us know how you get on. I hope that this helps.

If you still can't get on, check that the port is listening. You are after ports 513 & 514. If they are not listening, you may have to alter /etc/xinet.d/* to make sure that they are not disabled. Do not save backup versions of these files in the same directory or they will be considered live too, which can get messy - he says from experience Smilie


Robin
Liverpool/Blackburn
UK
 

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XRLOGIN(1)						      General Commands Manual							XRLOGIN(1)

NAME
xrlogin - start an xterm that uses ssh (or optionally rlogin or telnet) to connect to a remote host SYNOPSIS
xrlogin [-l username] [-rlogin|-telnet] [xterm options] remote-host DESCRIPTION
Xrlogin opens an xterm window and runs ssh, rlogin or telnet to login to a remote host. Xrlogin automatically passes the -name argument to xterm with a value of "xterm-hostname" where hostname is the name of the remote host. This allows the user to specify resources in their server's resource manager which are specific to xterms from a given host. For example, this feature can be used to make all xterm windows to a given remote host be the same color or use a specific font or start up in a spe- cific place on the screen. Xrsh(1) passes the same string so they are compatible in this regard. Xrlogin specifies that the default title for the new xterm will be "hostname" where hostname is the name of the remote host. This and the -name argument above can be overridden with xterm-options on the command line. One could also use xrlogin's sister command xrsh(1) to open a window to a remote host. In the case of xrsh, the xterm would run on the remote host and use X as the connection protocol while xrlogin would run the xterm on the local host and use rlogin or telnet as the con- nection protocol. See xrsh(1) for a discussion of the merits of each scheme. OPTIONS
-l username When not using -telnet, use username as the id to login to the remote host. -rlogin Use the rlogin protocol to open the connection. In general rlogin is preferred because it can be configured to not prompt the user for a password. Rlogin also automatically propagates window size change signals (SIGWINCH) to the remote host so that applications running there will learn of a new window size. -telnet Use the -telnet protocol to open the connection. Use of telnet provided mostly for hosts that don't support rlogin. COMMON PROBLEMS
Make sure that the local host is specified in the .rhosts file on the remote host or in the remote hosts /etc/hosts.equiv file. See rlogin(1) for more information. EXAMPLES
xrlogin -bg red yoda Start a local red xterm which connects to the remote host yoda using rlogin. xrlogin -telnet c70 Open a local xterm which connects to the remote host c70 using telnet. SEE ALSO
xrsh(1), rlogin(1), telnet(1) AUTHOR
James J. Dempsey <jjd@jjd.com> and Stephen Gildea <gildea@intouchsys.com>. X Version 11 Release 6 XRLOGIN(1)
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