CyberHunter
Local dataset, no network
// Other services

Port 1147: CAPIoverLAN

Port 1147 is assigned by IANA to capioverlan (CAPIoverLAN).

1147

How capioverlan works

Other services
client:1147capioverlanresponse client:1147capioverlanresponse

The client sends a request to port 1147 and the capioverlan 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 1147 dangerous?

We have no specific security note for port 1147. 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 1147

ServicePortTransportDescriptionReferenceUpdated
capioverlan 1147 TCP, UDP CAPIoverLAN - 2005-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 1147, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1147'      # process listening on 1147
sudo lsof -nP -i :1147

macOS

sudo lsof -nP -i :1147

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1147 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1147
netstat -ano | findstr :1147

From another machine

nmap -p 1147 -sV <host>
sudo nmap -sU -p 1147 <host>
nc -zv <host> 1147

Block it in the firewall

sudo ufw deny 1147/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1147" -Direction Inbound -LocalPort 1147 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1147 used for?

Port 1147 is assigned by IANA to capioverlan (CAPIoverLAN).

Is port 1147 TCP or UDP?

Port 1147 is registered for TCP and UDP.

Is it safe to open port 1147?

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 1147 is open?

On Linux run "ss -ltnup 'sport = :1147'", on macOS "lsof -nP -i :1147", and on Windows "netstat -ano | findstr :1147" to see the local process. From another machine, "nmap -p 1147 <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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