COMPUTER THREATS SECURITY
WHAT IS A FIREWALL IN NETWORK SECURITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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23
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25
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80
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34
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Detailed explanation-1: -Most Linux/Unix based machines such as OSX will automatically have a telnet client installed, which can be used by typing “telnet” within their native terminal window, followed by either the IP Address or Hostname of the remote Telnet Server, the port will automatically use 23.
Detailed explanation-2: -Port 23 is typically used by the Telnet protocol. Telnet commonly provides remote access to a variety of communications systems. Telnet is also often used for remote maintenance of many networking communications devices including routers and switches.
Detailed explanation-3: -It is configured to provide TELNET remote access (without a password) that pops a shell as root. If an attacker can connect to port 23 on the device, he can completely compromise it.
Detailed explanation-4: -Some IoT devices use port 2323 as an alternate port for Telnet. The Mirai botnet scans for vulnerable devices on both ports 23 and 2323.
Detailed explanation-5: -Telnet uses the TCP port protocol and port 23 to establish a connection with remote computers.