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// Other services

Port 34378: P-Net on IP local

Port 34378 is assigned by IANA to p-net-local (P-Net on IP local).

34378

How p-net-local works

Other services
client:34378p-net-localresponse client:34378p-net-localresponse

The client sends a request to port 34378 and the p-net-local 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 34378 dangerous?

We have no specific security note for port 34378. 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 34378

ServicePortTransportDescriptionReferenceUpdated
p-net-local 34378 TCP, UDP P-Net on IP local - 2004-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 34378, and is it reachable?

Linux

sudo ss -ltnup 'sport = :34378'      # process listening on 34378
sudo lsof -nP -i :34378

macOS

sudo lsof -nP -i :34378

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 34378 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 34378
netstat -ano | findstr :34378

From another machine

nmap -p 34378 -sV <host>
sudo nmap -sU -p 34378 <host>
nc -zv <host> 34378

Block it in the firewall

sudo ufw deny 34378/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 34378" -Direction Inbound -LocalPort 34378 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 34378 used for?

Port 34378 is assigned by IANA to p-net-local (P-Net on IP local).

Is port 34378 TCP or UDP?

Port 34378 is registered for TCP and UDP.

Is it safe to open port 34378?

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 34378 is open?

On Linux run "ss -ltnup 'sport = :34378'", on macOS "lsof -nP -i :34378", and on Windows "netstat -ano | findstr :34378" to see the local process. From another machine, "nmap -p 34378 <host>" shows whether it is reachable.

05 Related
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