CyberHunter
Local dataset, no network
// Other services

Port 2734: CCS Software

Port 2734 is assigned by IANA to ccs-software (CCS Software).

2734

How ccs-software works

Other services
client:2734ccs-softwareresponse client:2734ccs-softwareresponse

The client sends a request to port 2734 and the ccs-software 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 2734 dangerous?

We have no specific security note for port 2734. 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 2734

ServicePortTransportDescriptionReferenceUpdated
ccs-software 2734 TCP, UDP CCS Software - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2734, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2734'      # process listening on 2734
sudo lsof -nP -i :2734

macOS

sudo lsof -nP -i :2734

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2734 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2734
netstat -ano | findstr :2734

From another machine

nmap -p 2734 -sV <host>
sudo nmap -sU -p 2734 <host>
nc -zv <host> 2734

Block it in the firewall

sudo ufw deny 2734/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2734" -Direction Inbound -LocalPort 2734 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2734 used for?

Port 2734 is assigned by IANA to ccs-software (CCS Software).

Is port 2734 TCP or UDP?

Port 2734 is registered for TCP and UDP.

Is it safe to open port 2734?

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 2734 is open?

On Linux run "ss -ltnup 'sport = :2734'", on macOS "lsof -nP -i :2734", and on Windows "netstat -ano | findstr :2734" to see the local process. From another machine, "nmap -p 2734 <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

Latest vulnerability news

All news