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// Other services

Port 1424: Hybrid Encryption Protocol

Port 1424 is assigned by IANA to hybrid (Hybrid Encryption Protocol).

1424

How hybrid works

Other services
client:1424hybridresponse client:1424hybridresponse

The client sends a request to port 1424 and the hybrid 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 1424 dangerous?

We have no specific security note for port 1424. 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 1424

ServicePortTransportDescriptionReferenceUpdated
hybrid 1424 TCP, UDP Hybrid Encryption Protocol - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1424, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1424'      # process listening on 1424
sudo lsof -nP -i :1424

macOS

sudo lsof -nP -i :1424

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1424 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1424
netstat -ano | findstr :1424

From another machine

nmap -p 1424 -sV <host>
sudo nmap -sU -p 1424 <host>
nc -zv <host> 1424

Block it in the firewall

sudo ufw deny 1424/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1424" -Direction Inbound -LocalPort 1424 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1424 used for?

Port 1424 is assigned by IANA to hybrid (Hybrid Encryption Protocol).

Is port 1424 TCP or UDP?

Port 1424 is registered for TCP and UDP.

Is it safe to open port 1424?

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 1424 is open?

On Linux run "ss -ltnup 'sport = :1424'", on macOS "lsof -nP -i :1424", and on Windows "netstat -ano | findstr :1424" to see the local process. From another machine, "nmap -p 1424 <host>" shows whether it is reachable.

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