CyberHunter
Local dataset, no network
// Other services

Port 3870: hp OVSAM HostAgent Disco

Port 3870 is assigned by IANA to ovsam-d-agent (hp OVSAM HostAgent Disco).

3870

How ovsam-d-agent works

Other services
client:3870ovsam-d-agentresponse client:3870ovsam-d-agentresponse

The client sends a request to port 3870 and the ovsam-d-agent 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 3870 dangerous?

We have no specific security note for port 3870. 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 3870

ServicePortTransportDescriptionReferenceUpdated
ovsam-d-agent 3870 TCP, UDP hp OVSAM HostAgent Disco - 2003-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 3870, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3870'      # process listening on 3870
sudo lsof -nP -i :3870

macOS

sudo lsof -nP -i :3870

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3870 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3870
netstat -ano | findstr :3870

From another machine

nmap -p 3870 -sV <host>
sudo nmap -sU -p 3870 <host>
nc -zv <host> 3870

Block it in the firewall

sudo ufw deny 3870/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3870" -Direction Inbound -LocalPort 3870 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3870 used for?

Port 3870 is assigned by IANA to ovsam-d-agent (hp OVSAM HostAgent Disco).

Is port 3870 TCP or UDP?

Port 3870 is registered for TCP and UDP.

Is it safe to open port 3870?

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 3870 is open?

On Linux run "ss -ltnup 'sport = :3870'", on macOS "lsof -nP -i :3870", and on Windows "netstat -ano | findstr :3870" to see the local process. From another machine, "nmap -p 3870 <host>" shows whether it is reachable.

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