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Dual-Stack PPPoE on a FortiGate Firewall

You can use a FortiGate to connect to the Internet (that is: Dual-Stack!) directly in various ways. In my current setup, I’m using a PPPoE residential xDLS connection. It’s not that easy to configure everything correctly since it requires the use of many different protocols…

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Wallbox: the agony of choice

The task was clear: a wall box for your own home is needed, after all that is Load a tragedy on public columns. But the decision as to which Wallbox it should be was anything but easy. What criteria does a wall box have to…

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The domain name system

Hardly any other element is as essential for the Internet as the domain name system. Ruckelts in the DNS, websites and all internet applications react more slowly or not at all. But to determine and eliminate the causes of errors, company and home admins need…

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DHCPv6 Prefix Delegation on a FortiGate Firewall

I got DHCPv6-PD aka prefix delegation up and running on a FortiGate. Yes! Configuring it is tricky since it’s not always clear, which options to use. You cannot see everything in the GUI (it even changes depending on other options made later on or selects…

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xDSL-Modems

If you want to use an enterprise firewall on a classic DSL connection, you need an extra DSL modem. This differs from home customer routers like the Fritzbox, which always have a DSL modem built in. Back to the roots – just like back when…

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Dual-Stack PPPoE on a Palo Alto Firewall

If you want to establish an Internet connection (that is: IPv6 and IPv4) right away from your firewall through xDSL connections, you need quite some technologies: PPPoE and PPPoEv6 (PPP IPV6CP) along with DHCPv6-PD. Fortunately, with PAN-OS 11.0 and 11.1, those missing IPv6 links were…

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It’s Always DNS! @ SharkFest’23 EU

This time (2023) at the yearly Wireshark Developer and User Conference in Europe, I gave a talk about DNS. How could it have been any different –> The title simply had to be ‘It’s Always DNS‘. “This session dives deeper into the Domain Name System,…

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It’s Always DNS – Poster

We all know the DNS, right? But when we need to troubleshoot it, it’s getting much more complicated than initially thought. DNS ≠ DNS ≠ DNS. And unfortunately: It’s Always DNS. To get a better understanding of those different kinds of DNS servers (authoritative vs….

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