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// Network services

Port 7171: Discovery and Retention Mgt Production

Port 7171 is assigned by IANA to drm-production (Discovery and Retention Mgt Production).

7171

How drm-production works

Network services
client:7171drm-productionresponse client:7171drm-productionresponse

The client sends a request to port 7171 and the drm-production 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
Network services
01 Security

Is port 7171 dangerous?

We have no specific security note for port 7171. Its risk depends on the program actually listening on it. General advice for network services services:

  • Answer only the networks that need the service (no open resolvers, relays or reflectors).
  • UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
  • Disable legacy test services that have no use in production.
02 Registry

IANA registry entries for port 7171

ServicePortTransportDescriptionReferenceUpdated
drm-production 7171 TCP, UDP Discovery and Retention Mgt Production - 2010-02-18

// source: IANA service name and port number registry

03 Check it

Which program uses port 7171, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7171'      # process listening on 7171
sudo lsof -nP -i :7171

macOS

sudo lsof -nP -i :7171

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7171 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7171
netstat -ano | findstr :7171

From another machine

nmap -p 7171 -sV <host>
sudo nmap -sU -p 7171 <host>
nc -zv <host> 7171

Block it in the firewall

sudo ufw deny 7171/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7171" -Direction Inbound -LocalPort 7171 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7171 used for?

Port 7171 is assigned by IANA to drm-production (Discovery and Retention Mgt Production).

Is port 7171 TCP or UDP?

Port 7171 is registered for TCP and UDP.

Is it safe to open port 7171?

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. Answer only the networks that need the service (no open resolvers, relays or reflectors).

How do I check if port 7171 is open?

On Linux run "ss -ltnup 'sport = :7171'", on macOS "lsof -nP -i :7171", and on Windows "netstat -ano | findstr :7171" to see the local process. From another machine, "nmap -p 7171 <host>" shows whether it is reachable.

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