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// Other services

Port 3085: PCIHReq

Port 3085 is assigned by IANA to pcihreq (PCIHReq).

3085

How pcihreq works

Other services
client:3085pcihreqresponse client:3085pcihreqresponse

The client sends a request to port 3085 and the pcihreq 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 3085 dangerous?

We have no specific security note for port 3085. 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 3085

ServicePortTransportDescriptionReferenceUpdated
pcihreq 3085 TCP, UDP PCIHReq - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3085, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3085'      # process listening on 3085
sudo lsof -nP -i :3085

macOS

sudo lsof -nP -i :3085

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3085 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3085
netstat -ano | findstr :3085

From another machine

nmap -p 3085 -sV <host>
sudo nmap -sU -p 3085 <host>
nc -zv <host> 3085

Block it in the firewall

sudo ufw deny 3085/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3085" -Direction Inbound -LocalPort 3085 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3085 used for?

Port 3085 is assigned by IANA to pcihreq (PCIHReq).

Is port 3085 TCP or UDP?

Port 3085 is registered for TCP and UDP.

Is it safe to open port 3085?

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 3085 is open?

On Linux run "ss -ltnup 'sport = :3085'", on macOS "lsof -nP -i :3085", and on Windows "netstat -ano | findstr :3085" to see the local process. From another machine, "nmap -p 3085 <host>" shows whether it is reachable.

05 Related
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