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// Other services

Port 5422: Salient MUX

Port 5422 is assigned by IANA to salient-mux (Salient MUX).

5422

How salient-mux works

Other services
client:5422salient-muxresponse client:5422salient-muxresponse

The client sends a request to port 5422 and the salient-mux 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 5422 dangerous?

We have no specific security note for port 5422. 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 5422

ServicePortTransportDescriptionReferenceUpdated
salient-mux 5422 TCP, UDP Salient MUX - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 5422, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5422'      # process listening on 5422
sudo lsof -nP -i :5422

macOS

sudo lsof -nP -i :5422

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5422 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5422
netstat -ano | findstr :5422

From another machine

nmap -p 5422 -sV <host>
sudo nmap -sU -p 5422 <host>
nc -zv <host> 5422

Block it in the firewall

sudo ufw deny 5422/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5422" -Direction Inbound -LocalPort 5422 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5422 used for?

Port 5422 is assigned by IANA to salient-mux (Salient MUX).

Is port 5422 TCP or UDP?

Port 5422 is registered for TCP and UDP.

Is it safe to open port 5422?

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 5422 is open?

On Linux run "ss -ltnup 'sport = :5422'", on macOS "lsof -nP -i :5422", and on Windows "netstat -ano | findstr :5422" to see the local process. From another machine, "nmap -p 5422 <host>" shows whether it is reachable.

05 Related
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