When millions of people suddenly couldn't load familiar websites and apps during the Amazon Web Services, or AWS, outage on Oct. 20, 2025, the ...

If you want to be a sysadmin or network administrator of any kind, there’s a fundamental technology you really need to understand—DNS, the Domain Name System. There was a time when a sysadmin with no ...

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DNS works as the telephone directory for the Internet, and when it works, it's seamless to the user. But along with the growing move to self-host services comes a push to run DNS servers at home, ...