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// Other services

Port 2199: OneHome Service Port

Port 2199 is assigned by IANA to onehome-help (OneHome Service Port).

2199

How onehome-help works

Other services
client:2199onehome-helpresponse client:2199onehome-helpresponse

The client sends a request to port 2199 and the onehome-help 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 2199 dangerous?

We have no specific security note for port 2199. 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 2199

ServicePortTransportDescriptionReferenceUpdated
onehome-help 2199 TCP, UDP OneHome Service Port - 2005-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 2199, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2199'      # process listening on 2199
sudo lsof -nP -i :2199

macOS

sudo lsof -nP -i :2199

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2199 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2199
netstat -ano | findstr :2199

From another machine

nmap -p 2199 -sV <host>
sudo nmap -sU -p 2199 <host>
nc -zv <host> 2199

Block it in the firewall

sudo ufw deny 2199/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2199" -Direction Inbound -LocalPort 2199 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2199 used for?

Port 2199 is assigned by IANA to onehome-help (OneHome Service Port).

Is port 2199 TCP or UDP?

Port 2199 is registered for TCP and UDP.

Is it safe to open port 2199?

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 2199 is open?

On Linux run "ss -ltnup 'sport = :2199'", on macOS "lsof -nP -i :2199", and on Windows "netstat -ano | findstr :2199" to see the local process. From another machine, "nmap -p 2199 <host>" shows whether it is reachable.

05 Related
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