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// Other services

Port 1172: DNA Protocol

Port 1172 is assigned by IANA to dnap (DNA Protocol).

1172

How dnap works

Other services
client:1172dnapresponse client:1172dnapresponse

The client sends a request to port 1172 and the dnap service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 1172 dangerous?

We have no specific security note for port 1172. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 1172

ServicePortTransportDescriptionReferenceUpdated
dnap 1172 TCP, UDP DNA Protocol - 2004-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 1172, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1172'      # process listening on 1172
sudo lsof -nP -i :1172

macOS

sudo lsof -nP -i :1172

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1172 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1172
netstat -ano | findstr :1172

From another machine

nmap -p 1172 -sV <host>
sudo nmap -sU -p 1172 <host>
nc -zv <host> 1172

Block it in the firewall

sudo ufw deny 1172/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1172" -Direction Inbound -LocalPort 1172 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1172 used for?

Port 1172 is assigned by IANA to dnap (DNA Protocol).

Is port 1172 TCP or UDP?

Port 1172 is registered for TCP and UDP.

Is it safe to open port 1172?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 1172 is open?

On Linux run "ss -ltnup 'sport = :1172'", on macOS "lsof -nP -i :1172", and on Windows "netstat -ano | findstr :1172" to see the local process. From another machine, "nmap -p 1172 <host>" shows whether it is reachable.

05 Related
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