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// Other services

Port 16360: Network Serial Extension Ports One

Port 16360 is assigned by IANA to netserialext1 (Network Serial Extension Ports One).

16360

How netserialext1 works

Other services
client:16360netserialext1response client:16360netserialext1response

The client sends a request to port 16360 and the netserialext1 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 16360 dangerous?

We have no specific security note for port 16360. 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 16360

ServicePortTransportDescriptionReferenceUpdated
netserialext1 16360 TCP, UDP Network Serial Extension Ports One - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 16360, and is it reachable?

Linux

sudo ss -ltnup 'sport = :16360'      # process listening on 16360
sudo lsof -nP -i :16360

macOS

sudo lsof -nP -i :16360

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 16360 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 16360
netstat -ano | findstr :16360

From another machine

nmap -p 16360 -sV <host>
sudo nmap -sU -p 16360 <host>
nc -zv <host> 16360

Block it in the firewall

sudo ufw deny 16360/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 16360" -Direction Inbound -LocalPort 16360 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 16360 used for?

Port 16360 is assigned by IANA to netserialext1 (Network Serial Extension Ports One).

Is port 16360 TCP or UDP?

Port 16360 is registered for TCP and UDP.

Is it safe to open port 16360?

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 16360 is open?

On Linux run "ss -ltnup 'sport = :16360'", on macOS "lsof -nP -i :16360", and on Windows "netstat -ano | findstr :16360" to see the local process. From another machine, "nmap -p 16360 <host>" shows whether it is reachable.

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