connect two linux boxes by a crossover cable (Yu Sun)

Jyce jyce at free.fr
Tue Jun 29 19:05:36 UTC 2004


On Tue, 29 Jun 2004 11:38:52 -0400
"Michael S. Dunsavage" <mikesd at frontiernet.net> wrote:

> Yu Sun wrote:
> > Thank you all for your help! 
> > 
> > I understand ssh is superior to telnet. What I actually intended to
> > know is how to test the "mini" LAN to make sure it works correctly
> > beyond 'ping'. I re-checked the two '/etc/xinetd/telnet' files on
> > both hosts, and 'disable' is set to 'NO'. I reboot the both machine.
> > Telnet is still not working. Neither are ssh, scp, rsh etc. (rsh is
> > the function I really want, I try to install the mpich to test if I
> > can run parallel program and get speedup by using two machines
> > connected by a crossover cable, any suggestions about that is
> > welcomed too).
> > 
> > 
> > On host1, I type:
> > 
> >   % /usr/sbin/telneted.d      ( I am not sure I spell correctly here)
> > 
> > I got some message I remember indicating telnet is already running or
> > something. Then,
> > 
> >   % /usr/sbin/telneted.d -debug 80
> > (according to 'man', this is to manually start the server at port 80,
> > seems running)
> > 
> > on host 2, I type:
> >    % telnet host1 24 
You start the server on port 80 and try to connect to port 24 ?
BTW: telnet is running on port 23 by default.
> > again got 'connection refused'
> > 
> > How do you know the Telnet server is running?
> > On host 1, I type:
> >    % telnet host1 or % ssh host1 
> > It let me login as normal telnet or ssh client, does it mean telnet
> > or ssh server is runing on host1?
> > 
> > 
> > Yu 
> > 
> > 
> > 
> > 
> > 
> > 
> > --- Shiraz Baig <shiraz_baig at yahoo.com> wrote:
> > 
> >>When you get a message of "connection refused", it
> >>typically appears when the desired server is not
> >>running on the host machine. In your case, it is
> >>possible that telnet server is not running.
> >>
> >>You need to do three things to make telnet work.
> >>
> >>1) Install telnet server. (On a workstation,
> >>installation of Linux automatically installs telnet
> >>client. But you have to yourself install telnet
> >>server).
> >>
> >>2) Change the value of parameter disable from yes to
> >>no in the file /etc/xinetd/telnet. Note that if you
> >>have not installed telnet server, this file may not be
> >>present in the /etc/xinetd directory.
> >>
> >>3) Either reboot or restart xinetd.
> >>
> >>Now your telnet should work. 
> >>Also, as some friends have advised, ssh is more secure
> >>than telnet.
> >>bye
> >>shiraz 
> >>
> >>





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