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// Other services

Port 345: Perf Analysis Workbench

Port 345 is assigned by IANA to pawserv (Perf Analysis Workbench).

345

How pawserv works

Other services
client:345pawservresponse client:345pawservresponse

The client sends a request to port 345 and the pawserv 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 345 dangerous?

We have no specific security note for port 345. 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 345

ServicePortTransportDescriptionReferenceUpdated
pawserv 345 TCP, UDP Perf Analysis Workbench - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 345, and is it reachable?

Linux

sudo ss -ltnup 'sport = :345'      # process listening on 345
sudo lsof -nP -i :345

macOS

sudo lsof -nP -i :345

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 345 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 345
netstat -ano | findstr :345

From another machine

nmap -p 345 -sV <host>
sudo nmap -sU -p 345 <host>
nc -zv <host> 345

Block it in the firewall

sudo ufw deny 345/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 345" -Direction Inbound -LocalPort 345 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 345 used for?

Port 345 is assigned by IANA to pawserv (Perf Analysis Workbench).

Is port 345 TCP or UDP?

Port 345 is registered for TCP and UDP.

Is it safe to open port 345?

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 345 is open?

On Linux run "ss -ltnup 'sport = :345'", on macOS "lsof -nP -i :345", and on Windows "netstat -ano | findstr :345" to see the local process. From another machine, "nmap -p 345 <host>" shows whether it is reachable.

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