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 ...

Not sure whether this belongs here or LKF, but.. I've been running home Linux servers on static IPs, hosting my own email, web, DNS, etc., for a good many years. For the last five, it's been on ...

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 ...

Anyone know why a seemingly-normal Win2000 machine would oftentimes try to do TCP DNS lookups as opposed to the normal method of UDP? Our firewall doesn't allow TCP DNS and I keep seeing blocks in the ...

Port Query (PortQry.exe) is a command-line utility in the Windows operating system that you can use to help troubleshoot TCP/IP connectivity issues. The tool reports the port status of TCP and UDP ...

Answer by Keith Winstein on Quora, A lot of people ask this question and think in these terms, but here's a different point of view. TCP and UDP are not at the same level of abstraction and they're ...