Telnet problems

I just installed mandrake 6.1.  I am having problems with allowing other people to connect to my machine using telnet.
When someone connects to my computer it responds with connection terminated and goes no further.  
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From what i have read, mandrake does NOT install the telnet daemon by default. Consult your manuals and install it.

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That indicates a wrong DNS configuration (or perhaps none at all?). Check your /etc/resolv.conf, or try adding both localhost and the connecting host to /etc/hosts.
wups, my bad, I thought you wrote connection established :-)

I do belive, however, that Mandrake installs the telnet daemon by default (at least it did on my system)
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I haven't used Mandrake, but your question tells me that your machine is listening on the telnet port.  (Otherwise you'd get "connection refused.")  Check out the man pages on /etc/hosts.allow and /etc/hosts.deny.  When telnet access is denied by these files, the TCP-level connection is accepted and then immediately dropped, which is what you're seeing.  Alternaively,if no telnetd is installed, perhaps inted is accepting the connnection and then can't do anything.  In either case there should be a footprint in the syslog, typically /var/log/messages.
Well what s /var/log/secure saying (tail /var/log/secure just after you tried to connect)?
Solution is simple:
1. Log in as root
2. Using your favourite editor, open /etc/inetd.conf
3. Find the line that starts with:
4. Remove the starting #
5. Save the file
6. Restart the inet daemon by typing
killall -HUP inetd

and it's done :)))

If it does not work, post the relevant line from /etc/inetd.conf.

  What is the userid that the user try to log in.  I hope it's not root.

Try using other login id.  Sometime, some systems, Solaris for example restrict root login only from the console.

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