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Port 322 (rtsps)

IANA assigns port 322 to rtsps: RTSPS.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
rtsps TCP RTSPS Anders Klemets -
rtsps UDP RTSPS Anders Klemets -

Check what is listening on port 322

Linux: is anything listening on TCP 322?
sudo ss -tlnp 'sport = :322'
Linux: UDP 322
sudo ss -ulnp 'sport = :322'
Linux / macOS: which process owns the port
sudo lsof -nP -i :322
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':322 '
Windows (Command Prompt)
netstat -ano | findstr :322
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 322 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 322
From Windows
Test-NetConnection HOST -Port 322
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 322

Block port 322 in the firewall

ufw
sudo ufw deny 322/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 322 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 322 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 322' -Direction Inbound -Protocol TCP -LocalPort 322 -Action Block
ufw
sudo ufw deny 322/udp
iptables
sudo iptables -A INPUT -p udp --dport 322 -j DROP
nftables
sudo nft add rule inet filter input udp dport 322 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 322' -Direction Inbound -Protocol UDP -LocalPort 322 -Action Block

Related ports

320ptp-general321pip323rpki-rtr324rpki-rtr-tls

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