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Port 578 (ipdd)

IANA assigns port 578 to ipdd.

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

IANA assignment

Service nameProtoDescriptionAssigneeReference
ipdd TCP ipdd Jay Farhat -
ipdd UDP ipdd Jay Farhat -

Check what is listening on port 578

Linux: is anything listening on TCP 578?
sudo ss -tlnp 'sport = :578'
Linux: UDP 578
sudo ss -ulnp 'sport = :578'
Linux / macOS: which process owns the port
sudo lsof -nP -i :578
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':578 '
Windows (Command Prompt)
netstat -ano | findstr :578
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 578 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 578
From Windows
Test-NetConnection HOST -Port 578
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 578

Block port 578 in the firewall

ufw
sudo ufw deny 578/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 578 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 578 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 578' -Direction Inbound -Protocol TCP -LocalPort 578 -Action Block
ufw
sudo ufw deny 578/udp
iptables
sudo iptables -A INPUT -p udp --dport 578 -j DROP
nftables
sudo nft add rule inet filter input udp dport 578 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 578' -Direction Inbound -Protocol UDP -LocalPort 578 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.