Telnet allows remote access to a system. It also sends all it's data in plain text. So that means anyone that is listening to the internet can read all information (even passwords) that are sent.
In order to be able to telnet to a computer, it has to be running a telnet daemon or service. Windows XP does not run such a service by default. It can be activated (in the Professional version at least) in the Services console.
Telnet
TELNET Application layer services like Network Virtual Terminal are used to realise this. TELNET is the protocol used. Refer - Data Communication and Networking by Forouzan
Yes, but beware. Simply starting the telnet service on the PC will allow remote access, but telnet in known to be insecure. Also, additional configuration may be required if the PC being accessed remotely is not internet-facing, if in fact you are trying to access the remote PC over the web.
You can stop telnet in windows XP by stopping and disabling the service that is tied to this program. Right-click my computer then click Manage and on the left windows pane click Services then scroll down on the right side until you see the telnet service. That should eliminate the listening of port 23 on this computer. HMTECH78
Pinging a server just checks that Particular system is present on the network. Telnet or SSH are application to login the server from remote and use the services provided by the server. In TELNET DATA is not encrypted so it's easy to hack. In SSH DATA is encrypted so it's safe.
Telnet.
Telnet use port number 23,and connected to TCP
telnet hostname.com 1521
because telnet sucks!!
full form of telnet is tele network.
Telnet operates over TCP Port 23.