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// Other services

Port 4592: HRPD-ITH (AT-AN)

Port 4592 is assigned by IANA to hrpd-ith-at-an (HRPD-ITH (AT-AN)).

4592

How hrpd-ith-at-an works

Other services
client:4592hrpd-ith-at-anresponse client:4592hrpd-ith-at-anresponse

The client sends a request to port 4592 and the hrpd-ith-at-an service answers.

Transport
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 4592 dangerous?

We have no specific security note for port 4592. 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 4592

ServicePortTransportDescriptionReferenceUpdated
hrpd-ith-at-an 4592 UDP HRPD-ITH (AT-AN) - 2008-06-05
-4592-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 4592, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4592'      # process listening on 4592
sudo lsof -nP -i :4592

macOS

sudo lsof -nP -i :4592

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4592 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4592
netstat -ano | findstr :4592

From another machine

nmap -p 4592 -sV <host>
sudo nmap -sU -p 4592 <host>
nc -zv <host> 4592

Block it in the firewall

sudo ufw deny 4592/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4592" -Direction Inbound -LocalPort 4592 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 4592 used for?

Port 4592 is assigned by IANA to hrpd-ith-at-an (HRPD-ITH (AT-AN)).

Is port 4592 TCP or UDP?

Port 4592 is registered for UDP.

Is it safe to open port 4592?

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 4592 is open?

On Linux run "ss -ltnup 'sport = :4592'", on macOS "lsof -nP -i :4592", and on Windows "netstat -ano | findstr :4592" to see the local process. From another machine, "nmap -p 4592 <host>" shows whether it is reachable.

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