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Port 4167 (ddgn)

IANA assigns port 4167 to ddgn: DeskDirect Global Network.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ddgn TCP DeskDirect Global Network Laurie Charlwood -
ddgn UDP DeskDirect Global Network Laurie Charlwood -

Registry dates for this port: registered 2007-08-22.

Check what is listening on port 4167

Linux: is anything listening on TCP 4167?
sudo ss -tlnp 'sport = :4167'
Linux: UDP 4167
sudo ss -ulnp 'sport = :4167'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4167
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4167 '
Windows (Command Prompt)
netstat -ano | findstr :4167
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4167 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4167
From Windows
Test-NetConnection HOST -Port 4167
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4167

Block port 4167 in the firewall

ufw
sudo ufw deny 4167/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4167 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4167 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4167' -Direction Inbound -Protocol TCP -LocalPort 4167 -Action Block
ufw
sudo ufw deny 4167/udp
iptables
sudo iptables -A INPUT -p udp --dport 4167 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4167 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4167' -Direction Inbound -Protocol UDP -LocalPort 4167 -Action Block

Related ports

4165altcp4166joost4168pslicser4169iadt, iadt-disc

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