- 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.
Port 4423: thingkit secure mesh
Port 4423 is assigned by IANA to thingkit (thingkit secure mesh).
4423
How thingkit works
Other servicesThe client sends a request to port 4423 and the thingkit service answers.
- Transport
- TCP
- 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
Is port 4423 dangerous?
We have no specific security note for port 4423. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 4423
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| thingkit | 4423 | TCP | thingkit secure mesh | - | 2016-06-27 |
| - | 4423 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 4423, and is it reachable?
Linux
sudo ss -ltnup 'sport = :4423' # process listening on 4423
sudo lsof -nP -i :4423macOS
sudo lsof -nP -i :4423
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4423 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 4423 netstat -ano | findstr :4423
From another machine
nmap -p 4423 -sV <host> nc -zv <host> 4423
Block it in the firewall
sudo ufw deny 4423/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 4423" -Direction Inbound -LocalPort 4423 -Protocol TCP -Action Block # Windows
What is port 4423 used for?
Port 4423 is assigned by IANA to thingkit (thingkit secure mesh).
Is port 4423 TCP or UDP?
Port 4423 is registered for TCP.
Is it safe to open port 4423?
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 4423 is open?
On Linux run "ss -ltnup 'sport = :4423'", on macOS "lsof -nP -i :4423", and on Windows "netstat -ano | findstr :4423" to see the local process. From another machine, "nmap -p 4423 <host>" shows whether it is reachable.
Other other services ports
: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