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// Other services

Port 4307: TrueConf Videoconference Service

Port 4307 is assigned by IANA to trueconf (TrueConf Videoconference Service).

4307

How trueconf works

Other services
client:4307trueconfresponse client:4307trueconfresponse

The client sends a request to port 4307 and the trueconf 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 4307 dangerous?

We have no specific security note for port 4307. 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 4307

ServicePortTransportDescriptionReferenceUpdated
trueconf 4307 TCP, UDP TrueConf Videoconference Service - 2017-05-12

// source: IANA service name and port number registry

03 Check it

Which program uses port 4307, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4307'      # process listening on 4307
sudo lsof -nP -i :4307

macOS

sudo lsof -nP -i :4307

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4307 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4307
netstat -ano | findstr :4307

From another machine

nmap -p 4307 -sV <host>
sudo nmap -sU -p 4307 <host>
nc -zv <host> 4307

Block it in the firewall

sudo ufw deny 4307/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4307" -Direction Inbound -LocalPort 4307 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4307 used for?

Port 4307 is assigned by IANA to trueconf (TrueConf Videoconference Service).

Is port 4307 TCP or UDP?

Port 4307 is registered for TCP and UDP.

Is it safe to open port 4307?

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 4307 is open?

On Linux run "ss -ltnup 'sport = :4307'", on macOS "lsof -nP -i :4307", and on Windows "netstat -ano | findstr :4307" to see the local process. From another machine, "nmap -p 4307 <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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