How To Check If Port Is Opened?
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1. Use Telnet: Telnet is a network protocol used to establish a connection between a client and a server. It can be used to check if a port is open or not. To check if the port is opened, open the command prompt and type ‘telnet [hostname or IP address] [port]’. If the port is opened, you should see a blank screen.
2. Use Nmap: Nmap is a network scanning and security auditing tool. It can be used to scan a network or a single host to determine the open ports. To check if a port is opened, open the command prompt and type ‘nmap [hostname or IP address] -p [port]’. If the port is opened, you should see a message saying the port is open.