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// Other services

Port 9119: MXit Instant Messaging

Port 9119 is assigned by IANA to mxit (MXit Instant Messaging).

9119

How mxit works

Other services
client:9119mxitresponse client:9119mxitresponse

The client sends a request to port 9119 and the mxit 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 9119 dangerous?

We have no specific security note for port 9119. 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 9119

ServicePortTransportDescriptionReferenceUpdated
mxit 9119 TCP, UDP MXit Instant Messaging - 2006-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 9119, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9119'      # process listening on 9119
sudo lsof -nP -i :9119

macOS

sudo lsof -nP -i :9119

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9119 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9119
netstat -ano | findstr :9119

From another machine

nmap -p 9119 -sV <host>
sudo nmap -sU -p 9119 <host>
nc -zv <host> 9119

Block it in the firewall

sudo ufw deny 9119/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9119" -Direction Inbound -LocalPort 9119 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9119 used for?

Port 9119 is assigned by IANA to mxit (MXit Instant Messaging).

Is port 9119 TCP or UDP?

Port 9119 is registered for TCP and UDP.

Is it safe to open port 9119?

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 9119 is open?

On Linux run "ss -ltnup 'sport = :9119'", on macOS "lsof -nP -i :9119", and on Windows "netstat -ano | findstr :9119" to see the local process. From another machine, "nmap -p 9119 <host>" shows whether it is reachable.

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