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// Other services

Port 1788: psmond

Port 1788 is assigned by IANA to psmond (psmond).

1788

How psmond works

Other services
client:1788psmondresponse client:1788psmondresponse

The client sends a request to port 1788 and the psmond 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 1788 dangerous?

We have no specific security note for port 1788. 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 1788

ServicePortTransportDescriptionReferenceUpdated
psmond 1788 TCP, UDP psmond - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1788, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1788'      # process listening on 1788
sudo lsof -nP -i :1788

macOS

sudo lsof -nP -i :1788

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1788 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1788
netstat -ano | findstr :1788

From another machine

nmap -p 1788 -sV <host>
sudo nmap -sU -p 1788 <host>
nc -zv <host> 1788

Block it in the firewall

sudo ufw deny 1788/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1788" -Direction Inbound -LocalPort 1788 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1788 used for?

Port 1788 is assigned by IANA to psmond (psmond).

Is port 1788 TCP or UDP?

Port 1788 is registered for TCP and UDP.

Is it safe to open port 1788?

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 1788 is open?

On Linux run "ss -ltnup 'sport = :1788'", on macOS "lsof -nP -i :1788", and on Windows "netstat -ano | findstr :1788" to see the local process. From another machine, "nmap -p 1788 <host>" shows whether it is reachable.

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