Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:

Fewer Letters	More Letters
DHCP	Dynamic Host Configuration Protocol, automates assignment of IPs when connecting to a network
DNS	Domain Name Service/System
ISP	Internet Service Provider
NAT	Network Address Translation
PiHole	Network-wide ad-blocker (DNS sinkhole)
TLS	Transport Layer Security, supersedes SSL
VPN	Virtual Private Network

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