CyberHunter
Local dataset, no network
// Other services

Port 11103: OrigoDB Server Sync Interface

Port 11103 is assigned by IANA to origo-sync (OrigoDB Server Sync Interface).

11103

How origo-sync works

Other services
client:11103origo-syncresponse client:11103origo-syncresponse

The client sends a request to port 11103 and the origo-sync service answers.

Transport
TCP
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 11103 dangerous?

We have no specific security note for port 11103. 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 11103

ServicePortTransportDescriptionReferenceUpdated
origo-sync 11103 TCP OrigoDB Server Sync Interface - 2013-03-29
-11103-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 11103, and is it reachable?

Linux

sudo ss -ltnup 'sport = :11103'      # process listening on 11103
sudo lsof -nP -i :11103

macOS

sudo lsof -nP -i :11103

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 11103 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 11103
netstat -ano | findstr :11103

From another machine

nmap -p 11103 -sV <host>
nc -zv <host> 11103

Block it in the firewall

sudo ufw deny 11103/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 11103" -Direction Inbound -LocalPort 11103 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 11103 used for?

Port 11103 is assigned by IANA to origo-sync (OrigoDB Server Sync Interface).

Is port 11103 TCP or UDP?

Port 11103 is registered for TCP.

Is it safe to open port 11103?

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 11103 is open?

On Linux run "ss -ltnup 'sport = :11103'", on macOS "lsof -nP -i :11103", and on Windows "netstat -ano | findstr :11103" to see the local process. From another machine, "nmap -p 11103 <host>" shows whether it is reachable.

05 Related
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