Redis, registered with IANA and running with no password unless you set one.
Port 6379 is the registered Redis port and the default for every Redis and Redis-compatible server. Redis is designed for trusted networks: authentication is off unless you configure ACLs or requirepass. Since 3.2 it starts in protected mode, replying only to loopback when it binds all interfaces with no password set, but plenty of deployments disable that or bind explicitly and end up open.
Do not expose
Redis's own docs say do not expose the port to the internet — one FLUSHALL wipes the dataset, and CONFIG-based file writes can lead to code execution.
$ redis-cli -h 127.0.0.1 -p 6379 PINGSeen this on your network? Beige Box scans your Wi-Fi and shows every open port on every device — and its Ports tool links straight back here.
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Corrections or a missing port? Reply @rimrocksystems.