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// Web

Port 8008: HTTP Alternate

Port 8008 is assigned by IANA to http-alt (HTTP Alternate).

8008

How http-alt works

Web
browser:8008http-alt browser:8008http-alt

A browser sends an HTTP request to port 8008 and the http-alt server sends the page back.

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
Web
01 Security

Is port 8008 dangerous?

We have no specific security note for port 8008. Its risk depends on the program actually listening on it. General advice for web services:

  • Serve it over HTTPS only and check the HTTP security headers.
  • Keep admin consoles and development servers off the Internet.
  • Patch the application server and remove default credentials and sample apps.
02 Registry

IANA registry entries for port 8008

ServicePortTransportDescriptionReferenceUpdated
http-alt 8008 TCP, UDP HTTP Alternate - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 8008, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8008'      # process listening on 8008
sudo lsof -nP -i :8008

macOS

sudo lsof -nP -i :8008

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8008 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8008
netstat -ano | findstr :8008

From another machine

nmap -p 8008 -sV <host>
sudo nmap -sU -p 8008 <host>
nc -zv <host> 8008

Block it in the firewall

sudo ufw deny 8008/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8008" -Direction Inbound -LocalPort 8008 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8008 used for?

Port 8008 is assigned by IANA to http-alt (HTTP Alternate).

Is port 8008 TCP or UDP?

Port 8008 is registered for TCP and UDP.

Is it safe to open port 8008?

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. Serve it over HTTPS only and check the HTTP security headers.

How do I check if port 8008 is open?

On Linux run "ss -ltnup 'sport = :8008'", on macOS "lsof -nP -i :8008", and on Windows "netstat -ano | findstr :8008" to see the local process. From another machine, "nmap -p 8008 <host>" shows whether it is reachable.

05 Related

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