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Port 2763 (desktop-dna)

IANA assigns port 2763 to desktop-dna: Desktop DNA.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
desktop-dna TCP Desktop DNA Jon Walker -
desktop-dna UDP Desktop DNA Jon Walker -

Check what is listening on port 2763

Linux: is anything listening on TCP 2763?
sudo ss -tlnp 'sport = :2763'
Linux: UDP 2763
sudo ss -ulnp 'sport = :2763'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2763
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2763 '
Windows (Command Prompt)
netstat -ano | findstr :2763
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2763 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2763
From Windows
Test-NetConnection HOST -Port 2763
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2763

Block port 2763 in the firewall

ufw
sudo ufw deny 2763/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2763 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2763 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2763' -Direction Inbound -Protocol TCP -LocalPort 2763 -Action Block
ufw
sudo ufw deny 2763/udp
iptables
sudo iptables -A INPUT -p udp --dport 2763 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2763 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2763' -Direction Inbound -Protocol UDP -LocalPort 2763 -Action Block

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2761dicom-iscl2762dicom-tls2764data-insurance2765qip-audup

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