In the world of Linux networking, protocols play a crucial role in enabling seamless communication between devices. Whether you're browsing the internet, streaming videos, or troubleshooting network ...

PortExpert is a free application that can give very useful information about all TCP, UDP communications connected to the system and is hence useful to identify potential threats. These days we are ...

If you are a network engineer or a normal user, you may need to find, open or block a virtual port, such as a TCP or a UDP port for an application. Virtual ports help you manage your network hardware ...

VPN Services ExpressVPN price, deals, and discounts: the best offers in 2025 VPN Services The most private VPN: 2025's best no log VPNs to stay anonymous online VPN Services Best Chrome VPN extension ...

In the last newsletter we started discussing the protocol stack used for transporting voice over IP. Today we’ll move to the control for those conversations. By the way, before we get all those e-mail ...

Security practitioners for decades have advised people to limit DNS queries against their DNS servers to only use UDP port 53. The reality is that DNS queries can also use TCP port 53 if UDP port 53 ...

An industry group of the world's biggest DNS service providers has agreed on a plan to improve the state of the DNS ecosystem by forcing certain configuration changes upon the smaller server operators ...