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// Other services

Port 8027: peer tracker and data relay service

Port 8027 is assigned by IANA to papachi-p2p-srv (peer tracker and data relay service).

8027

How papachi-p2p-srv works

Other services
client:8027papachi-p2p-srvresponse client:8027papachi-p2p-srvresponse

The client sends a request to port 8027 and the papachi-p2p-srv 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 8027 dangerous?

We have no specific security note for port 8027. 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 8027

ServicePortTransportDescriptionReferenceUpdated
papachi-p2p-srv 8027 TCP, UDP peer tracker and data relay service - 2020-09-18

// source: IANA service name and port number registry

03 Check it

Which program uses port 8027, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8027'      # process listening on 8027
sudo lsof -nP -i :8027

macOS

sudo lsof -nP -i :8027

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8027 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8027
netstat -ano | findstr :8027

From another machine

nmap -p 8027 -sV <host>
sudo nmap -sU -p 8027 <host>
nc -zv <host> 8027

Block it in the firewall

sudo ufw deny 8027/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8027" -Direction Inbound -LocalPort 8027 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8027 used for?

Port 8027 is assigned by IANA to papachi-p2p-srv (peer tracker and data relay service).

Is port 8027 TCP or UDP?

Port 8027 is registered for TCP and UDP.

Is it safe to open port 8027?

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 8027 is open?

On Linux run "ss -ltnup 'sport = :8027'", on macOS "lsof -nP -i :8027", and on Windows "netstat -ano | findstr :8027" to see the local process. From another machine, "nmap -p 8027 <host>" shows whether it is reachable.

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