Similar to 正引きで確認された逆引きDNSエントリ

SOCKS

SoftEther VPN

Switched Multi-megabit Data Service

Syslog

List of TCP and UDP port numbers

Time Protocol

Type–length–value

UDP hole punching

UT-VPN

Web server directory index

World IPv6 Day and World IPv6 Launch Day

Internet layer

Ephemeral port

End-to-end principle

Open Archives Initiative Protocol for Metadata Harvesting

Virtual network interface

Service discovery

Stellar (payment network)

Tor (network)

PacketiX VPN

Handle System