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Linux - Networking This forum is for any issue related to networks or networking.
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Old 12-15-2009, 04:25 AM   #1
vivek mishra
LQ Newbie
 
Registered: Dec 2009
Posts: 1

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telnet related problem


telnet 127.0.0.1 22
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
SSH-2.0-OpenSSH_4.1

Protocol mismatch.
Connection closed by foreign host.
.........................................................................\



how we solve this problem.......plz describe in detail.............
.....................................................................


also tell me how we configure these in telnet in detail:-
(a) Use LDAP to access ‘Telnet’ service on a LAN server.
(b) Use /etc/hosts.allow and /etc/hosts.deny to allow & deny access to web service to
two hosts on the LAN.
(c) Use ‘iptables’ or similar utility to block TCP SYN segments from a particular IP
address for port 25 using firewall rules.
(d) Use an IDS tool (e.g. tripwire, snort) to track changes in /var/log/messages after every
5 minutes and to monitor the ICMP requests coming to the host.
 
Old 12-15-2009, 08:37 AM   #2
camorri
LQ Veteran
 
Registered: Nov 2002
Location: Somewhere inside 9.9 million sq. km. Canada
Distribution: Slackware 14.1, 14.2
Posts: 5,280

Rep: Reputation: 567Reputation: 567Reputation: 567Reputation: 567Reputation: 567Reputation: 567
You are using the wrong client. Use ssh not telnet. Look at your output, you have OpenSSH on port 22.

Try 'ssh 127.0.0.1' (without the quotes) and see what happens.

Telnet is unsecured, and generally not used on nix systems any more. SSH is the secured version, and is well supported.
 
  


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