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// Other services

Port 5246: CAPWAP Control Protocol

Port 5246 is assigned by IANA to capwap-control (CAPWAP Control Protocol).

5246

How capwap-control works

Other services
client:5246capwap-controlresponse client:5246capwap-controlresponse

The client sends a request to port 5246 and the capwap-control service answers.

Transport
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 5246 dangerous?

We have no specific security note for port 5246. 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 5246

ServicePortTransportDescriptionReferenceUpdated
capwap-control 5246 UDP CAPWAP Control Protocol RFC 5415 -
-5246-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5246, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5246'      # process listening on 5246
sudo lsof -nP -i :5246

macOS

sudo lsof -nP -i :5246

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5246 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5246
netstat -ano | findstr :5246

From another machine

nmap -p 5246 -sV <host>
sudo nmap -sU -p 5246 <host>
nc -zv <host> 5246

Block it in the firewall

sudo ufw deny 5246/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5246" -Direction Inbound -LocalPort 5246 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 5246 used for?

Port 5246 is assigned by IANA to capwap-control (CAPWAP Control Protocol).

Is port 5246 TCP or UDP?

Port 5246 is registered for UDP.

Is it safe to open port 5246?

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 5246 is open?

On Linux run "ss -ltnup 'sport = :5246'", on macOS "lsof -nP -i :5246", and on Windows "netstat -ano | findstr :5246" to see the local process. From another machine, "nmap -p 5246 <host>" shows whether it is reachable.

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