If your app is using bog-standard OpenVPN - or even some proprietary protocols, such as ExpressVPN's Lightway - you might find it gives you both UDP and TCP options. You may like Can fast be faster?

If you understand the concepts of IP addresses, then lets move on to TCP and UDP ports and how they work. The devices and comptuers connected to the Internet use a protocol called TCP/IP to ...

Whether you're browsing the internet, streaming videos, or troubleshooting network issues, underlying networking protocols such as TCP/IP, UDP, and ICMP are responsible for the smooth transmission of ...

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 ...

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 ...

Data packets travel to and from numbered network ports associated with particular IP addresses and endpoints, using the TCP or UDP transport layer protocols. All ports are potentially at risk of ...

As with any network and internet-capable computing system, many of Apple's services and programs require access to the internet and/or local network using TCP and UDP ports to function properly.

Two simple filters for wireshark to analyze TCP and UDP traffic Your email has been sent Wireshark is a protocol analyser available for download. This week’s post ...

Scott Reeves demonstrates the use of iperf, which provides basic information on throughput, packet loss, and jitter to help you troubleshoot UDP and TCP issues. There are a few tools available to ...

The tool reports the port status of TCP and UDP ports on a computer that you select. This post will show you how to use the Port Query tool for network reconnaissance or forensic activity.