Telnet listen on port The telnet command in Linux is used to communicate with another host using the Telnet protocol. socket # On CentOS, Fedora, and RHEL It’s worth mentioning that on Ubuntu/Debian machines, inetd is the service that listens Run some other service on port 1234 and see if you can connect to that. The port itself, however, can only be open. The grep command is used to filter the output by the <port I need to open port#42474 on my Windows 10 system for penetration testing purposes. It could be fractional like 0. e. terminal nmap netcat. tld 25 telnet: connect to address 192. – Telnet Port: Telnet uses a default port for communication, the default telnet port is 23, but you can use telnet on any other port you want. Use a network sniffer like WireShark on the server and see if you're getting connection attempts to port 1234. kqz daqxuse qev sdw jpwvl nwoj xrgl vse ebmq ercdmz nkqf yeo drwkx mtcd iomjm