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// Other services

Port 1352: Lotus Note

Port 1352 is assigned by IANA to lotusnote (Lotus Note).

1352

How lotusnote works

Other services
client:1352lotusnoteresponse client:1352lotusnoteresponse

The client sends a request to port 1352 and the lotusnote 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 1352 dangerous?

We have no specific security note for port 1352. 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 1352

ServicePortTransportDescriptionReferenceUpdated
lotusnote 1352 TCP, UDP Lotus Note - 1992-07

// source: IANA service name and port number registry

03 Check it

Which program uses port 1352, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1352'      # process listening on 1352
sudo lsof -nP -i :1352

macOS

sudo lsof -nP -i :1352

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1352 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1352
netstat -ano | findstr :1352

From another machine

nmap -p 1352 -sV <host>
sudo nmap -sU -p 1352 <host>
nc -zv <host> 1352

Block it in the firewall

sudo ufw deny 1352/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1352" -Direction Inbound -LocalPort 1352 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1352 used for?

Port 1352 is assigned by IANA to lotusnote (Lotus Note).

Is port 1352 TCP or UDP?

Port 1352 is registered for TCP and UDP.

Is it safe to open port 1352?

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 1352 is open?

On Linux run "ss -ltnup 'sport = :1352'", on macOS "lsof -nP -i :1352", and on Windows "netstat -ano | findstr :1352" to see the local process. From another machine, "nmap -p 1352 <host>" shows whether it is reachable.

05 Related
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