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Full Discussion: Telnet issue
Operating Systems Linux Red Hat Telnet issue Post 302917782 by junior-helper on Thursday 18th of September 2014 01:45:10 PM
Old 09-18-2014
Are you sure you installed the "telnet-server" package and not the "telnet" application only?

Did the installation process also install "xinetd" as dependency?

What's the output of rpm -q xinetd telnet-server?

Here is what I have:
Code:
# rpm -q xinetd telnet-server
xinetd-2.3.14-39.el6_4.i686
telnet-server-0.17-47.el6_3.1.i686
#
# rpm -qc telnet-server
/etc/xinetd.d/telnet
#

Here is also the original telnet configuration file, which needs to be changed in order to get telnet-server up and running:
Code:
# default: on
# description: The telnet server serves telnet sessions; it uses \
#    unencrypted username/password pairs for authentication.
service telnet
{
    flags        = REUSE
    socket_type    = stream        
    wait        = no
    user        = root
    server        = /usr/sbin/in.telnetd
    log_on_failure    += USERID
    disable        = yes
}

When you change disable = yes to disable = no, then you just need to start or restart the xinetd service:
Code:
# service xinetd restart

---------- Post updated at 07:45 PM ---------- Previous update was at 07:38 PM ----------

An appropriate iptables rule in /etc/sysconfig/iptables might also be required:
Code:
-A INPUT -m state --state NEW -m tcp -p tcp --dport 23 -j ACCEPT

Plus restart of the iptables service:
Code:
# service iptables restart

 

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LEARN ABOUT OSF1

telnetrc

telnetrc(4)						     Kernel Interfaces Manual						       telnetrc(4)

NAME

       telnetrc, .telnetrc - Specifies setup commands for a telnet session

SYNOPSIS

       $HOME/.telnetrc

DESCRIPTION

       The .telnetrc file contains the setup information for a telnet session.	It is a hidden file in your home directory and must be readable by
       the user logging in.

       The file can consist of multiple entries for each remote host to which a user can connect.  A remote host entry consists of multiple lines.
       The first line is the name of a remote host. The subsequent lines must begin with blank spaces, and contain telnet subcommands.	These sub-
       commands are processed as though they were typed in manually. Lines beginning with a number sign (#) are comment lines.	See telnet(1)  for
       a complete list of telnet subcommands.

       To specify subcommands that apply to all systems, create an entry, using the word "DEFAULT" as the system name, and specify the telnet sub-
       commands in the subsequent lines.

EXAMPLES

       The following shows a sample .telnetrc file:

       # Beginning of telnetrc file # Default subcommands that apply to all systems DEFAULT
	  environ undefine USER # First system entry system1
	  set echo
	  toggle crlf # Second system entry system2
	  set echo
	  mode line
	  toggle crlf

FILES

       User-customized telnet startup values.

RELATED INFORMATION

       Commands:  telnet(1).  delim off

																       telnetrc(4)
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