- Telnet is used to connect to the servers, switches, routers and most of the other network devices.
- Telnet stands for Telecommunications and Networks.
- Using port 23 Telnet.
- Data encryption is not supported by telnet. If you need a more secure way as a replacement for telnet, Use SSH (Secure Shell)
- Insecure by nature as it send all traffic across the wire (Or through the wireless) in clear text.
- All passwords are transmitted in plain text.
- Hackers can sniff the passwords using some application such as Wireshark.
Telnet usage examples:
- Telnet can be used to check if the ports are open on a network resource
Open the command prompt and type “Telnet www.ITPerfection.com 80”
- Telnet can be used to connect to the routers and switches to configure them and backup their settings.
- Secure Shell is an alternate way for Telnet.
- It uses port 22 and uses data encryption.
- The passwords that are being transferred through the public or unsecure network, are encrypted.
- Most of the Telnet clients such as TeraTerm, SecureCRT and Putty support SSH as well.