CyberHunter
Local dataset, no network
// Other services

Port 5437: pmip6-data

Port 5437 is assigned by IANA to pmip6-data (pmip6-data).

5437

How pmip6-data works

Other services
client:5437pmip6-dataresponse client:5437pmip6-dataresponse

The client sends a request to port 5437 and the pmip6-data 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 5437 dangerous?

We have no specific security note for port 5437. 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 5437

ServicePortTransportDescriptionReferenceUpdated
pmip6-data 5437 UDP pmip6-data RFC 5844 -
-5437-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5437, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5437'      # process listening on 5437
sudo lsof -nP -i :5437

macOS

sudo lsof -nP -i :5437

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5437 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5437
netstat -ano | findstr :5437

From another machine

nmap -p 5437 -sV <host>
sudo nmap -sU -p 5437 <host>
nc -zv <host> 5437

Block it in the firewall

sudo ufw deny 5437/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5437" -Direction Inbound -LocalPort 5437 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 5437 used for?

Port 5437 is assigned by IANA to pmip6-data (pmip6-data).

Is port 5437 TCP or UDP?

Port 5437 is registered for UDP.

Is it safe to open port 5437?

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 5437 is open?

On Linux run "ss -ltnup 'sport = :5437'", on macOS "lsof -nP -i :5437", and on Windows "netstat -ano | findstr :5437" to see the local process. From another machine, "nmap -p 5437 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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