In this tutorial we will discuss the concept of Ports and how they work with IP addresses. If you have not read our article on IP addresses and need a brush up, you can find the article here. If you ...

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 ...

Arcserve UDP (unified data protection) provides a one-stop shop for backup and recovery of all your physical and virtual systems. Available as a turnkey appliance or software only, UDP 9.1 introduces ...

Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you're buying the best. Find out more about how we test. This review first appeared in issue ...

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 ...

You may have never heard of it, but if you are a Chrome user, chances are you’ve used Google’s QUIC protocol already. As Google disclosed this week, about half of all requests from Chrome to Google’s ...

You've installed a VPN. It's not quite as fast as you'd like. You could switch to another service, but maybe there's a simple speedup trick you can try first. Open ...