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// Other services

Port 3726: Xyratex Array Manager

Port 3726 is assigned by IANA to array-manager (Xyratex Array Manager).

3726

How array-manager works

Other services
client:3726array-managerresponse client:3726array-managerresponse

The client sends a request to port 3726 and the array-manager 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 3726 dangerous?

We have no specific security note for port 3726. 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 3726

ServicePortTransportDescriptionReferenceUpdated
array-manager 3726 TCP, UDP Xyratex Array Manager - 2003-04

// source: IANA service name and port number registry

03 Check it

Which program uses port 3726, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3726'      # process listening on 3726
sudo lsof -nP -i :3726

macOS

sudo lsof -nP -i :3726

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3726 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3726
netstat -ano | findstr :3726

From another machine

nmap -p 3726 -sV <host>
sudo nmap -sU -p 3726 <host>
nc -zv <host> 3726

Block it in the firewall

sudo ufw deny 3726/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3726" -Direction Inbound -LocalPort 3726 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3726 used for?

Port 3726 is assigned by IANA to array-manager (Xyratex Array Manager).

Is port 3726 TCP or UDP?

Port 3726 is registered for TCP and UDP.

Is it safe to open port 3726?

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 3726 is open?

On Linux run "ss -ltnup 'sport = :3726'", on macOS "lsof -nP -i :3726", and on Windows "netstat -ano | findstr :3726" to see the local process. From another machine, "nmap -p 3726 <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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