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// Other services

Port 23457: Aequus Service Mgmt

Port 23457 is assigned by IANA to aequus-alt (Aequus Service Mgmt).

23457

How aequus-alt works

Other services
client:23457aequus-altresponse client:23457aequus-altresponse

The client sends a request to port 23457 and the aequus-alt service answers.

Transport
TCP
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 23457 dangerous?

We have no specific security note for port 23457. 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 23457

ServicePortTransportDescriptionReferenceUpdated
aequus-alt 23457 TCP Aequus Service Mgmt - 2009-02-12
-23457-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 23457, and is it reachable?

Linux

sudo ss -ltnup 'sport = :23457'      # process listening on 23457
sudo lsof -nP -i :23457

macOS

sudo lsof -nP -i :23457

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 23457 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 23457
netstat -ano | findstr :23457

From another machine

nmap -p 23457 -sV <host>
nc -zv <host> 23457

Block it in the firewall

sudo ufw deny 23457/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 23457" -Direction Inbound -LocalPort 23457 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 23457 used for?

Port 23457 is assigned by IANA to aequus-alt (Aequus Service Mgmt).

Is port 23457 TCP or UDP?

Port 23457 is registered for TCP.

Is it safe to open port 23457?

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 23457 is open?

On Linux run "ss -ltnup 'sport = :23457'", on macOS "lsof -nP -i :23457", and on Windows "netstat -ano | findstr :23457" to see the local process. From another machine, "nmap -p 23457 <host>" shows whether it is reachable.

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