Ports

Every TCP and UDP port rockboxd binds, plus mDNS/SSDP service types.

Service	Port	Protocol	Override
gRPC	6061	gRPC / gRPC-Web	ROCKBOX_RPC_PORT
GraphQL + Web UI	6062	HTTP / WS	ROCKBOX_GRAPHQL_PORT
HTTP REST	6063	HTTP	ROCKBOX_TCP_PORT
MPD server	6600	MPD protocol	ROCKBOX_MPD_PORT
Subsonic / Navidrome API	4533	HTTP	subsonic_port
S3-compatible API	9000	HTTP	s3_port
Jellyfin-compatible API (opt-in)	8096	HTTP	jellyfin_port — omit to disable
Jellyfin client discovery	7359	UDP	(fixed — bound when Jellyfin is enabled)
CMAF (HLS + DASH)	7882	HTTP	cmaf_http_port
Slim Protocol (squeezelite)	3483	TCP	squeezelite_port
HTTP PCM stream (squeezelite)	9999	HTTP	squeezelite_http_port
Chromecast WAV stream	7881	HTTP	chromecast_http_port
UPnP MediaServer (ContentDirectory)	7878	HTTP / SSDP	upnp_server_port
UPnP WAV broadcast (PCM sink)	7879	HTTP	upnp_http_port
UPnP MediaRenderer (AVTransport)	7880	HTTP / SSDP	upnp_renderer_port
Snapcast TCP source (outbound only)	4953	TCP (client)	snapcast_tcp_port

mDNS / SSDP service types

Rockbox both advertises and scans for the following on the LAN:

Service	Service type	Direction
Rockbox itself	_rockbox._tcp.local.	advertise
Jellyfin server (this one)	_jellyfin._tcp.local.	advertise
Chromecast	_googlecast._tcp.local.	scan
AirPlay (RAOP)	_raop._tcp.local.	scan
Squeezelite players	_slim._tcp.local.	scan
Snapcast servers	_snapcast._tcp.local.	scan
UPnP renderers	urn:schemas-upnp-org:device:MediaRenderer:1	SSDP scan
UPnP media server (this one)	urn:schemas-upnp-org:device:MediaServer:1	SSDP advertise

Firewall checklist

If rockboxd is in a VM, container, or behind a firewall, at minimum inbound on these is needed:

• 6062/tcp — for the web UI and GraphQL
• 6063/tcp — for the REST API
• 6600/tcp — for MPD clients
• 4533/tcp — for Subsonic/Navidrome clients (Cassette, Symfonium, DSub, …)
• 8096/tcp — for Jellyfin clients (Finamp, Findroid, Streamyfin, Amcfy, Symfonium); also 7359/udp if you want client auto-discovery
• 9000/tcp — for the S3-compatible API (awscli, mc, rclone) when s3_enabled = true
• 7882/tcp — for HLS / DASH in-browser playback (when audio_output = "cmaf")
• 5353/udp — mDNS (multicast)
• 1900/udp — SSDP (multicast)

If you use Chromecast or AirPlay, the receiver must also be able to reach back to rockboxd on 7881/tcp (Chromecast WAV) or 7879/tcp (UPnP WAV).