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// Other services

Port 2136: APPWORXSRV

Port 2136 is assigned by IANA to appworxsrv (APPWORXSRV).

2136

How appworxsrv works

Other services
client:2136appworxsrvresponse client:2136appworxsrvresponse

The client sends a request to port 2136 and the appworxsrv 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 2136 dangerous?

We have no specific security note for port 2136. 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 2136

ServicePortTransportDescriptionReferenceUpdated
appworxsrv 2136 TCP, UDP APPWORXSRV - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2136, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2136'      # process listening on 2136
sudo lsof -nP -i :2136

macOS

sudo lsof -nP -i :2136

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2136 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2136
netstat -ano | findstr :2136

From another machine

nmap -p 2136 -sV <host>
sudo nmap -sU -p 2136 <host>
nc -zv <host> 2136

Block it in the firewall

sudo ufw deny 2136/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2136" -Direction Inbound -LocalPort 2136 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2136 used for?

Port 2136 is assigned by IANA to appworxsrv (APPWORXSRV).

Is port 2136 TCP or UDP?

Port 2136 is registered for TCP and UDP.

Is it safe to open port 2136?

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 2136 is open?

On Linux run "ss -ltnup 'sport = :2136'", on macOS "lsof -nP -i :2136", and on Windows "netstat -ano | findstr :2136" to see the local process. From another machine, "nmap -p 2136 <host>" shows whether it is reachable.

05 Related
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