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// Other services

Port 1626: Shockwave

Port 1626 is assigned by IANA to shockwave (Shockwave).

1626

How shockwave works

Other services
client:1626shockwaveresponse client:1626shockwaveresponse

The client sends a request to port 1626 and the shockwave 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 1626 dangerous?

We have no specific security note for port 1626. 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 1626

ServicePortTransportDescriptionReferenceUpdated
shockwave 1626 TCP, UDP Shockwave - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1626, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1626'      # process listening on 1626
sudo lsof -nP -i :1626

macOS

sudo lsof -nP -i :1626

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1626 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1626
netstat -ano | findstr :1626

From another machine

nmap -p 1626 -sV <host>
sudo nmap -sU -p 1626 <host>
nc -zv <host> 1626

Block it in the firewall

sudo ufw deny 1626/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1626" -Direction Inbound -LocalPort 1626 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1626 used for?

Port 1626 is assigned by IANA to shockwave (Shockwave).

Is port 1626 TCP or UDP?

Port 1626 is registered for TCP and UDP.

Is it safe to open port 1626?

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 1626 is open?

On Linux run "ss -ltnup 'sport = :1626'", on macOS "lsof -nP -i :1626", and on Windows "netstat -ano | findstr :1626" to see the local process. From another machine, "nmap -p 1626 <host>" shows whether it is reachable.

05 Related
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