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Port 583 (philips-vc)

IANA assigns port 583 to philips-vc: Philips Video-Conferencing.

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

IANA assignment

Service nameProtoDescriptionAssigneeReference
philips-vc TCP Philips Video-Conferencing Janna Chang -
philips-vc UDP Philips Video-Conferencing Janna Chang -

Check what is listening on port 583

Linux: is anything listening on TCP 583?
sudo ss -tlnp 'sport = :583'
Linux: UDP 583
sudo ss -ulnp 'sport = :583'
Linux / macOS: which process owns the port
sudo lsof -nP -i :583
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':583 '
Windows (Command Prompt)
netstat -ano | findstr :583
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 583 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 583
From Windows
Test-NetConnection HOST -Port 583
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 583

Block port 583 in the firewall

ufw
sudo ufw deny 583/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 583 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 583 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 583' -Direction Inbound -Protocol TCP -LocalPort 583 -Action Block
ufw
sudo ufw deny 583/udp
iptables
sudo iptables -A INPUT -p udp --dport 583 -j DROP
nftables
sudo nft add rule inet filter input udp dport 583 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 583' -Direction Inbound -Protocol UDP -LocalPort 583 -Action Block

Related ports

581bdp582scc-security584keyserver586password-chg

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