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// Other services

Port 10008: Octopus Multiplexer

Port 10008 is assigned by IANA to octopus (Octopus Multiplexer).

10008

How octopus works

Other services
client:10008octopusresponse client:10008octopusresponse

The client sends a request to port 10008 and the octopus 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 10008 dangerous?

We have no specific security note for port 10008. 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 10008

ServicePortTransportDescriptionReferenceUpdated
octopus 10008 TCP, UDP Octopus Multiplexer - 2002-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 10008, and is it reachable?

Linux

sudo ss -ltnup 'sport = :10008'      # process listening on 10008
sudo lsof -nP -i :10008

macOS

sudo lsof -nP -i :10008

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 10008 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 10008
netstat -ano | findstr :10008

From another machine

nmap -p 10008 -sV <host>
sudo nmap -sU -p 10008 <host>
nc -zv <host> 10008

Block it in the firewall

sudo ufw deny 10008/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 10008" -Direction Inbound -LocalPort 10008 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 10008 used for?

Port 10008 is assigned by IANA to octopus (Octopus Multiplexer).

Is port 10008 TCP or UDP?

Port 10008 is registered for TCP and UDP.

Is it safe to open port 10008?

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 10008 is open?

On Linux run "ss -ltnup 'sport = :10008'", on macOS "lsof -nP -i :10008", and on Windows "netstat -ano | findstr :10008" to see the local process. From another machine, "nmap -p 10008 <host>" shows whether it is reachable.

05 Related
: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

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