Setting up High Availability on pfSense is not that difficult. It consists of configuring the state and settings synchronization (pfsync), creating virtual IPs (CARP) and changing the settings for DHCP, DNS and NTP so that you clients use the virtual IP. But things get tricky if you have only 1 IPv4 WAN address and it is assigned via DHCP by your ISP. If CARP is not an option for the WAN interface, how can we make sure we get the same public IP address on both firewalls?Continue reading Pin DHCP WAN interface to LAN for pfSense CARP/HA
Telenet is an ISP in Belgium that provides its customers with IPv6. Everywhere I looked on the net I read that you should configure your firewall with a /56 IPv6 prefix, but I could not get it to work with my modem in bridging mode. I got it working after changing it to /60. Read along for the full explanationContinue reading IPv6 with pfSense and Telenet
Have you tried turning it off and on again? Sad but true, it really helps sometimes. In my particular case I have this Gigaset Maxwell 10 VoIP phone that sometimes loses its SIP registration on my FreePBX server. Manually rebooting the phone remediates the problem, but let’s automate that…Continue reading Restart unregistered VoIP phone via PoE
I had a very strange problem in my home network: some wired hosts did not get an IP address from my wireless router. After some sniffing with Wireshark, I concluded that this problem only occurred with hosts that were connected to my D-Link DGS-1500-20 gigabit Ethernet switch. Hosts that were connected to my wireless router received an IP address via DHCP without any problem.
I did not find any settings in the DGS-1500 that could fix this problem and even a factory reset (pushing the reset button) did not fix it. Eventually I was able to fix this problem by updating the stock firmware 1.00.013 to version 2.51.005!