How to add network monitoring to your 3CX linux appliance

Disclaimer: This is intended for advanced users only. It is not supported by us or 3CX.

To follow this guide you will need a reasonable understanding of Linux. You can copy/paste the instructions below and get it done, but it is advised that you try to understand what we are doing.

STEP1 – make sure you have SSH access to your linux box and that you know your admin credentials.

STEP2- once you login to the unit lets validate what version of linux we are running by running cat /etc/os-release you should get PRETTY_NAME="Debian GNU/Linux 9 (stretch)"

STEP2A – lets also validate that 3CX services are running by running systemctl list-units --type=service

 you should get

UNIT                                LOAD   ACTIVE SUB     DESCRIPTION

3CXAudioProvider01.service          loaded active running 3CX PhoneSystem 01 Audio Provider Server

3CXCallFlow01.service               loaded active running 3CX PhoneSystem 01 CallFlow Server

3CXCfgServ01.service                loaded active running 3CX PhoneSystem Configuration Service

3CXEventNotificationManager.service loaded active running 3CX Event Notification Manager

3CXIVR01.service                    loaded active running 3CX PhoneSystem 01 IVR Server

3CXMediaServer.service              loaded active running 3CX PhoneSystem Media Server

3CXPhoneSystem01.service            loaded active running 3CX PhoneSystem 01 SIP Server

3CXPhoneSystemMC01.service          loaded active running 3CX PhoneSystem 01 Management Console

3CXQueueManager01.service           loaded active running 3CX PhoneSystem 01 Queue Manager Server

3CXSystemService01.service          loaded active running 3CX PhoneSystem 01 System Server

3CXTunnel01.service                 loaded active running 3CX PhoneSystem 01 SIP/RTP Tunneling Proxy

nginx.service                       loaded active running A high performance web server and a reverse proxy server

STEP3 – confirm what firewall is running on the box by running sudo iptables -L -v

STEP4 – Update all the drivers on the box by running apt-get update -y

STEP5 – Install basic prerequisites apt-get install wget gnupg -y

STEP6 – Download the correct version of ntop (refer back to the version of linux you are running). In our case it is Debian 9 (Stretch) so we get wget https://packages.ntop.org/apt/stretch/all/apt-ntop.deb and apt install ./apt-ntop.deb

STEP7 – install additional packages apt-get clean all   apt-get update  apt-get install pfring-dkms nprobe ntopng n2disk cento

STEP8 – Turn ntop on  systemctl start ntopng  systemctl enable ntopng

STEP9 – open port TCP 3000 on the firewall sudo iptables -A INPUT -p tcp --dport 3000 -j ACCEPT

STEP10 – Validate it is working systemctl status ntopng and ss -plunt | grep 3000

STEP10A – connect to the system via a browser <hostname>:3000

STEP11 – if all is working then make sure to save the firewall rules iptables-save