If you understand the concepts of IP addresses, then lets move on to TCP and UDP ports and how they work. In this tutorial we will discuss the concept of Ports and how they work with IP addresses.

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 The best VPN for ...

TCP is considered the "reliable" protocol because it is connection oriented. But if it's so reliable, why do avionics systems like AFDX use UDP?

Also an IETF standard, this nearly-identical-to-UDP protocol differs in one key way: It has a checksum (a number that is the result of a logical operation performed on all the data, which if it ...

27 under udp is part of smtp, rather esmtp - pop mail service of SLMail. If it is port 27, it is TCP NSW (National Software Works).<BR><BR>Port 20670 I thought was one of the old gaming ports but ...

Because TCP and UDP port numbers are 16 bits in length, they fall in the range of 0 to 65,535, which are the smallest and largest decimal equivalents of the binary numbers that fit inside a 16-bit ...

The current IP address scheme of 32-bit words is fast becoming inadequate. It would appear that 2 32 = 4 294 967 296 combinations of addresses should be enough for everybody, but in practice this is ...

It just so happens that the checksum is not calculated exclusively over the UDP/TCP packet itself however, but rather on the packet plus something known as a ‘pseudo-header’. First things first, ...

According to this group, starting with February 1, 2020, DNS servers that can't handle DNS queries over both UDP and TCP may be pushed out of the DNS ecosystem and stop working.

Introduction. 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 ...