CyberHunter
Local dataset, no network
// Other services

Port 3970: LANrev Agent

Port 3970 is assigned by IANA to lanrevagent (LANrev Agent).

3970

How lanrevagent works

Other services
client:3970lanrevagentresponse client:3970lanrevagentresponse

The client sends a request to port 3970 and the lanrevagent 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 3970 dangerous?

We have no specific security note for port 3970. 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 3970

ServicePortTransportDescriptionReferenceUpdated
lanrevagent 3970 TCP, UDP LANrev Agent - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3970, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3970'      # process listening on 3970
sudo lsof -nP -i :3970

macOS

sudo lsof -nP -i :3970

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3970 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3970
netstat -ano | findstr :3970

From another machine

nmap -p 3970 -sV <host>
sudo nmap -sU -p 3970 <host>
nc -zv <host> 3970

Block it in the firewall

sudo ufw deny 3970/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3970" -Direction Inbound -LocalPort 3970 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3970 used for?

Port 3970 is assigned by IANA to lanrevagent (LANrev Agent).

Is port 3970 TCP or UDP?

Port 3970 is registered for TCP and UDP.

Is it safe to open port 3970?

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 3970 is open?

On Linux run "ss -ltnup 'sport = :3970'", on macOS "lsof -nP -i :3970", and on Windows "netstat -ano | findstr :3970" to see the local process. From another machine, "nmap -p 3970 <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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