CyberHunter
Local dataset, no network
// Other services

Port 3815: LANsurveyor XML

Port 3815 is assigned by IANA to lansurveyorxml (LANsurveyor XML).

3815

How lansurveyorxml works

Other services
client:3815lansurveyorxmlresponse client:3815lansurveyorxmlresponse

The client sends a request to port 3815 and the lansurveyorxml 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 3815 dangerous?

We have no specific security note for port 3815. 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 3815

ServicePortTransportDescriptionReferenceUpdated
lansurveyorxml 3815 TCP, UDP LANsurveyor XML - 2004-04

// source: IANA service name and port number registry

03 Check it

Which program uses port 3815, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3815'      # process listening on 3815
sudo lsof -nP -i :3815

macOS

sudo lsof -nP -i :3815

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3815 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3815
netstat -ano | findstr :3815

From another machine

nmap -p 3815 -sV <host>
sudo nmap -sU -p 3815 <host>
nc -zv <host> 3815

Block it in the firewall

sudo ufw deny 3815/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3815" -Direction Inbound -LocalPort 3815 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3815 used for?

Port 3815 is assigned by IANA to lansurveyorxml (LANsurveyor XML).

Is port 3815 TCP or UDP?

Port 3815 is registered for TCP and UDP.

Is it safe to open port 3815?

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 3815 is open?

On Linux run "ss -ltnup 'sport = :3815'", on macOS "lsof -nP -i :3815", and on Windows "netstat -ano | findstr :3815" to see the local process. From another machine, "nmap -p 3815 <host>" shows whether it is reachable.

05 Related
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