Difference between revisions of "Telnet"

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[[Category:Daemons_and_system_services (English)]]
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[[Category:Networking]]
Under construction
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[[de:Telnet]]
 
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[[es:Telnet]]
=Introduction=
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[[zh-CN:Telnet]]
 
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[[Wikipedia:Telnet|Telnet]] is the traditional protocol for making remote console connections over TCP. Telnet is '''not secure''' and is mainly used to connect to legacy equipment nowadays. For a secure alternative see [[SSH]].
TELNET is the traditional protocol for making remote console connections over TCP.
 
 
 
TELNET is not secured and is mainly used to connect to legacy equipment now days.
 
  
 
Follow these instructions to configure an Arch Linux machine as a telnet server.
 
Follow these instructions to configure an Arch Linux machine as a telnet server.
  
=Installation=
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== Installation ==
 
 
To only use telnet to connect to other machines, install netkit-telnet:
 
 
 
<pre>
 
pacman -S netkit-telnet
 
</pre>
 
 
 
To also configure a telnet server, install xinetd as well:
 
 
 
<pre>
 
pacman -S xinetd netkit-telnet
 
</pre>
 
 
 
*Important, "Telnetd is evil legacy code and is not trustworthy - do not run it unless you absolutely need it." a quote from the netkit-telnet readme.
 
  
A better option when needing a telnet server, is to install telnet-bsd from AUR instead of netkit-telnet (which also has support for IPv6).
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To use telnet only to connect to other machines, [[pacman|install]] {{Pkg|inetutils}}.
  
=Configuration=
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To configure a telnet server, install {{Pkg|xinetd}} as well.
  
1. To allow telnet connections in xinetd:
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== Configuration ==
<pre>
 
vi /etc/xinetd.d/telnet
 
</pre>
 
  
Change 'disable' from 'yes' to 'no'
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To allow telnet connections in xinetd, edit {{ic|/etc/xinetd.d/telnet}}, change {{ic|1=disable = yes}} to {{ic|1=disable = no}} and restart xinetd service.
  
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Enable [[systemd]] xinetd service if you wish to start it at boot time.
  
2. To allow telnet connections to your machine, add the following to /etc/hosts.allow:
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=== Testing the setup ===
<pre>
 
in.telnetd: ALL
 
</pre>
 
  
3. Add xinetd to the "DAEMONS" section of your /etc/rc.conf
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Try opening a telnet connection to your server:
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$ telnet localhost
  
4. Reboot or restart xinetd:
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Note that you can not login as root.
<pre>
 
/etc/rc.d/xinetd restart
 
</pre>
 

Revision as of 10:06, 1 June 2013

zh-CN:Telnet Telnet is the traditional protocol for making remote console connections over TCP. Telnet is not secure and is mainly used to connect to legacy equipment nowadays. For a secure alternative see SSH.

Follow these instructions to configure an Arch Linux machine as a telnet server.

Installation

To use telnet only to connect to other machines, install inetutils.

To configure a telnet server, install xinetd as well.

Configuration

To allow telnet connections in xinetd, edit /etc/xinetd.d/telnet, change disable = yes to disable = no and restart xinetd service.

Enable systemd xinetd service if you wish to start it at boot time.

Testing the setup

Try opening a telnet connection to your server:

$ telnet localhost

Note that you can not login as root.