While there are many monitoring tools available to network administrators for port scanning and network mapping, Nmap is the de facto standard. Here's why.

Network traffic from the Internet without a port assignment from the router is automatically rejected, since it is unsolicited and potentially malicious traffic.

Port knocking is a method of opening ports on a firewall by trying to connect with a series of ports in a pre-determined order. The sequence of “knocks” acts like a secret access code ...

If you want to Forward Ports to VirtualBox or Virtual Machine and use it like a server, follow instructions for VirtuaBox Port forwarding.

CARLSBAD, Calif., May 19, 2025--MaxLinear high port count Ethernet switch SoCs accelerate the development of compact, low-power, wired networking smart switches ...

Jack Wallen demonstrates how to open a port in Portmaster to allow secure shell traffic into a desktop computer.