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Tag: sysadmin

Correct syntax for DHCP Option 66 on pfSense with FreePBX

February 18, 2017 Chad

With the Windows DHCP server, I just had to enable Option 66 and enter the IP address and it worked perfectly. However with pfSense, simply entering the IP address doesn’t work.

On pfSense, go to your DHCP server, add option 66, with a type of ‘Text’, and a value of: tftp://IP_OF_FREEPBX_SERVER

Here’s what mine looks like.

Technologyfreepbx, pfsense, sysadmin

Saving IPTABLES rules on Ubuntu 16.04

June 17, 2016 Chad

In order to preserve your IPTABLES rules upon reboot, install iptables-persistant.

sudo apt-get install iptables-persistent

If you make any changes to the rules, run the following commands so you don’t lose them during a system reboot.

sudo netfilter-persistent save
sudo netfilter-persistent reload

Ubuntuiptables, Linux, sysadmin

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