PfSense on Zotac Zbox CI327

Some helpfull notes when installing pfSense on your Zotac Zbox CI327.

Install from usb stick

  • Preparing the drive
  • Download pfsense image
  • Write image to drive

Known problems you can run in to.

CI327 has Realtek NIC’s. For the best performance, you need to tweak some settings in the Gui:


  • CHECK Disable hardware checksum offload
  • CHECK Disable hardware TCP segmentation offload
  • CHECK Disable hardware large receive offload

Hanging during boot time

Boot hangs showing the following line:

Timecounter “HPET” frequency 19200000 Hz quality 950

You can solve this by disabling in Bios:
/Features/CPU Configuration/Monitor M-Wait -> disabled



Chrome browser in Ubuntu

Follow the instruction for installation:

  1. Add Key:
    wget -q -O - | sudo apt-key add - 
  2. Set repository:
    sudo sh -c 'echo "deb [arch=amd64] stable main" >> /etc/apt/sources.list.d/google-chrome.list'
  3. Install package:
    sudo apt-get update 
    sudo apt-get install google-chrome-stable

OpenSSH server install Ubuntu

1. To install it, open terminal (Ctrl+Alt+T) or log in Ubuntu server and run command:

sudo apt-get install openssh-server


2. After that, you should have SSH service enabled in your system, you may check its status by running command:

sudo service ssh status


3. You may change some settings (e.g., the listening port, and root login permission) by editing the configuration file via command:

sudo nano /etc/ssh/sshd_config

On Ubuntu desktop, you may use gedit instead of nano:


Finally apply the changes by restarting or reloading SSH:

sudo service ssh restart