Telnet can be used to get into certain routers and other devices in the network. This will aid in the troubleshooting process because the devices support that protocol but it should be noted that it is a very insecure protocol and should never be used from outside the network to the inside of the network.
SSH is more secure than Telnet.
The command is bad configurate.
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
SYN flooding
The firewall blocks it. Almost all router have telnet port blocked because it's considered dangerous.
TELNET operates at Application Layer in TCP/IP Model. It's an Application to establish a connection to TCP Port Number 23, where a Telnet server application (telnetd) is listening.
full form of telnet is tele network.
All commands sent over Telnet are transmitted in plain text. An intruder on the network could potentially capture ethernet frames as they move across the media. The captured frames could reveal the network configuration including passwords. SSH (Secure Shell) encrypts all data sent between the client and server.
Telnet is a terminal network that was developed in 1969 and is noit a Telecommunication network. Telnet was one of the firts internet providers providing access to most operating systems via a remote host which is on an open network so it has some security issues.
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 does not encrypt anything; that is why it is too insecure to use as a network protocol.
Type telnet:// in either Safari or Firefox.