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// Other services

Port 5907: Distress and Safety Data App

Port 5907 is assigned by IANA to dsd (Distress and Safety Data App).

5907

How dsd works

Other services
client:5907dsdresponse client:5907dsdresponse

The client sends a request to port 5907 and the dsd service answers.

Transport
TCP · UDP · SCTP
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 5907 dangerous?

We have no specific security note for port 5907. 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 5907

ServicePortTransportDescriptionReferenceUpdated
dsd 5907 TCP, UDP, SCTP Distress and Safety Data App - 2022-06-03

// source: IANA service name and port number registry

03 Check it

Which program uses port 5907, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5907'      # process listening on 5907
sudo lsof -nP -i :5907

macOS

sudo lsof -nP -i :5907

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5907 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5907
netstat -ano | findstr :5907

From another machine

nmap -p 5907 -sV <host>
sudo nmap -sU -p 5907 <host>
nc -zv <host> 5907

Block it in the firewall

sudo ufw deny 5907/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5907" -Direction Inbound -LocalPort 5907 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5907 used for?

Port 5907 is assigned by IANA to dsd (Distress and Safety Data App).

Is port 5907 TCP or UDP?

Port 5907 is registered for TCP and UDP and SCTP.

Is it safe to open port 5907?

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 5907 is open?

On Linux run "ss -ltnup 'sport = :5907'", on macOS "lsof -nP -i :5907", and on Windows "netstat -ano | findstr :5907" to see the local process. From another machine, "nmap -p 5907 <host>" shows whether it is reachable.

05 Related
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