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// Other services

Port 7720: MedImage Portal

Port 7720 is assigned by IANA to medimageportal (MedImage Portal).

7720

How medimageportal works

Other services
client:7720medimageportalresponse client:7720medimageportalresponse

The client sends a request to port 7720 and the medimageportal 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 7720 dangerous?

We have no specific security note for port 7720. 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 7720

ServicePortTransportDescriptionReferenceUpdated
medimageportal 7720 TCP, UDP MedImage Portal - 2003-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 7720, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7720'      # process listening on 7720
sudo lsof -nP -i :7720

macOS

sudo lsof -nP -i :7720

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7720 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7720
netstat -ano | findstr :7720

From another machine

nmap -p 7720 -sV <host>
sudo nmap -sU -p 7720 <host>
nc -zv <host> 7720

Block it in the firewall

sudo ufw deny 7720/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7720" -Direction Inbound -LocalPort 7720 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7720 used for?

Port 7720 is assigned by IANA to medimageportal (MedImage Portal).

Is port 7720 TCP or UDP?

Port 7720 is registered for TCP and UDP.

Is it safe to open port 7720?

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 7720 is open?

On Linux run "ss -ltnup 'sport = :7720'", on macOS "lsof -nP -i :7720", and on Windows "netstat -ano | findstr :7720" to see the local process. From another machine, "nmap -p 7720 <host>" shows whether it is reachable.

05 Related
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