CyberHunter
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// Other services

Port 2093: NBX CC

Port 2093 is assigned by IANA to nbx-cc (NBX CC).

2093

How nbx-cc works

Other services
client:2093nbx-ccresponse client:2093nbx-ccresponse

The client sends a request to port 2093 and the nbx-cc 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 2093 dangerous?

We have no specific security note for port 2093. 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 2093

ServicePortTransportDescriptionReferenceUpdated
nbx-cc 2093 TCP, UDP NBX CC - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2093, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2093'      # process listening on 2093
sudo lsof -nP -i :2093

macOS

sudo lsof -nP -i :2093

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2093 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2093
netstat -ano | findstr :2093

From another machine

nmap -p 2093 -sV <host>
sudo nmap -sU -p 2093 <host>
nc -zv <host> 2093

Block it in the firewall

sudo ufw deny 2093/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2093" -Direction Inbound -LocalPort 2093 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2093 used for?

Port 2093 is assigned by IANA to nbx-cc (NBX CC).

Is port 2093 TCP or UDP?

Port 2093 is registered for TCP and UDP.

Is it safe to open port 2093?

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 2093 is open?

On Linux run "ss -ltnup 'sport = :2093'", on macOS "lsof -nP -i :2093", and on Windows "netstat -ano | findstr :2093" to see the local process. From another machine, "nmap -p 2093 <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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