CyberHunter
Local dataset, no network
// Other services

Port 2575: HL7

Port 2575 is assigned by IANA to hl7 (HL7).

2575

How hl7 works

Other services
client:2575hl7response client:2575hl7response

The client sends a request to port 2575 and the hl7 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 2575 dangerous?

We have no specific security note for port 2575. 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 2575

ServicePortTransportDescriptionReferenceUpdated
hl7 2575 TCP, UDP HL7 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2575, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2575'      # process listening on 2575
sudo lsof -nP -i :2575

macOS

sudo lsof -nP -i :2575

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2575 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2575
netstat -ano | findstr :2575

From another machine

nmap -p 2575 -sV <host>
sudo nmap -sU -p 2575 <host>
nc -zv <host> 2575

Block it in the firewall

sudo ufw deny 2575/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2575" -Direction Inbound -LocalPort 2575 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2575 used for?

Port 2575 is assigned by IANA to hl7 (HL7).

Is port 2575 TCP or UDP?

Port 2575 is registered for TCP and UDP.

Is it safe to open port 2575?

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 2575 is open?

On Linux run "ss -ltnup 'sport = :2575'", on macOS "lsof -nP -i :2575", and on Windows "netstat -ano | findstr :2575" to see the local process. From another machine, "nmap -p 2575 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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