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// Other services

Port 14143: IceWall Cert Protocol over TLS

Port 14143 is assigned by IANA to icpps (IceWall Cert Protocol over TLS).

14143

How icpps works

Other services
client:14143#%&@!x9response? client:14143#%&@!x9response?

The client sends a request to port 14143 and the icpps service answers. Everything is encrypted: someone on the path only sees unreadable bytes.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
EncryptedTLS or built-in crypto
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 14143 dangerous?

We have no specific security note for port 14143. 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 14143

ServicePortTransportDescriptionReferenceUpdated
icpps 14143 TCP IceWall Cert Protocol over TLS - 2016-05-24
-14143-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 14143, and is it reachable?

Linux

sudo ss -ltnup 'sport = :14143'      # process listening on 14143
sudo lsof -nP -i :14143

macOS

sudo lsof -nP -i :14143

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 14143 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 14143
netstat -ano | findstr :14143

From another machine

nmap -p 14143 -sV <host>
nc -zv <host> 14143

Block it in the firewall

sudo ufw deny 14143/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 14143" -Direction Inbound -LocalPort 14143 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 14143 used for?

Port 14143 is assigned by IANA to icpps (IceWall Cert Protocol over TLS).

Is port 14143 TCP or UDP?

Port 14143 is registered for TCP.

Is it safe to open port 14143?

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 14143 is open?

On Linux run "ss -ltnup 'sport = :14143'", on macOS "lsof -nP -i :14143", and on Windows "netstat -ano | findstr :14143" to see the local process. From another machine, "nmap -p 14143 <host>" shows whether it is reachable.

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