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Port 8554 (RTSP alternate)

Alternative RTSP port used by MediaMTX (rtsp-simple-server), go2rtc and some cameras.

Registered (user) port, 1024-49151 TCP Streaming Do not expose to the internet

What port 8554 is used for

Alternative RTSP port used by MediaMTX (rtsp-simple-server), go2rtc and some cameras.

Security: should port 8554 be open?

Do not expose to the internet. Require credentials and keep camera streams off the internet.

IANA assignment

Service nameProtoDescriptionAssigneeReference
rtsp-alt TCP RTSP Alternate (see port 554) Stephen Casner 2 -
rtsp-alt UDP RTSP Alternate (see port 554) Stephen Casner 2 -

Check what is listening on port 8554

Linux: is anything listening on TCP 8554?
sudo ss -tlnp 'sport = :8554'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8554
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8554 '
Windows (Command Prompt)
netstat -ano | findstr :8554
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8554 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8554
From Windows
Test-NetConnection HOST -Port 8554

Block port 8554 in the firewall

ufw
sudo ufw deny 8554/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8554 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8554 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8554' -Direction Inbound -Protocol TCP -LocalPort 8554 -Action Block

Related ports

554RTSP1935RTMP8502ftnmtp8503lsp-self-ping8555d-fence8567dof-tunnel

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.