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// Other services

Port 19194: UserAuthority SecureAgent

Port 19194 is assigned by IANA to ua-secureagent (UserAuthority SecureAgent).

19194

How ua-secureagent works

Other services
client:19194ua-secureagentresponse client:19194ua-secureagentresponse

The client sends a request to port 19194 and the ua-secureagent 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 19194 dangerous?

We have no specific security note for port 19194. 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 19194

ServicePortTransportDescriptionReferenceUpdated
ua-secureagent 19194 TCP, UDP UserAuthority SecureAgent - 2003-01

// source: IANA service name and port number registry

03 Check it

Which program uses port 19194, and is it reachable?

Linux

sudo ss -ltnup 'sport = :19194'      # process listening on 19194
sudo lsof -nP -i :19194

macOS

sudo lsof -nP -i :19194

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 19194 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 19194
netstat -ano | findstr :19194

From another machine

nmap -p 19194 -sV <host>
sudo nmap -sU -p 19194 <host>
nc -zv <host> 19194

Block it in the firewall

sudo ufw deny 19194/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 19194" -Direction Inbound -LocalPort 19194 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 19194 used for?

Port 19194 is assigned by IANA to ua-secureagent (UserAuthority SecureAgent).

Is port 19194 TCP or UDP?

Port 19194 is registered for TCP and UDP.

Is it safe to open port 19194?

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 19194 is open?

On Linux run "ss -ltnup 'sport = :19194'", on macOS "lsof -nP -i :19194", and on Windows "netstat -ano | findstr :19194" to see the local process. From another machine, "nmap -p 19194 <host>" shows whether it is reachable.

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