Finally! With PAN-OS 11.0 a long missing IPv6 feature was introduced: DHCPv6-PD aka prefix delegation. For the first time, we can now operate a PAN-OS firewall directly on the Internet (the IPv6-Internet that is) on many kinds of ISP connections. Remember: To get a routed…
What is DHCPv6 Prefix Delegation? Coming from IPv4, you’re already familiar with DHCP (for IPv4) which hands out IPv4 addresses to clients. The same applies to (stateful) DHCPv6: it hands out IPv6 addresses to clients. However, with IPv6 we’re heavily dealing with subnets rather than…
Klemmt es im Netzwerk, so helfen Ping und Traceroute, Fehler und Engpässe einzukreisen. Wir erklären die Funktionsweise und helfen Angriffe aufzudecken. Diesen Artikel habe ich initial für die c’t geschrieben, wo er im Heft 24/2022 erschienen ist. Als Autor habe ich dankenswerterweise die… Source link…
Another update of the Ultimate PCAP is available. Again, there are some special new packets in there which I want to point out here. Feel free to download the newest version to examine those new protocols and packets by yourself. Featuring: SNMPv3, WoL, IPMI, HSRP,…
For many years I was afraid to open new issues for open-source tools since I am not a coder at all and won’t ever be able to fix some of the problems. Many times I got answers like “The source is open, go ahead and…
When implementing NTP servers, it’s always an interesting part to check whether the server is “up and running” and reachable from the clients. While I’ve done many basic NTP checks out of Linux, I lacked a small docu to do this with Windows. It turned…
During my IPv6 classes, I discovered a (minor) bug at the NGFW from Palo Alto Networks: ICMPv6 error messages, such as “time exceeded” (type 3) as a reply of traceroute, or “destination unreachable” (type 1) as a reply of a drop policy, are not correctly…
For the last few years, I have been confused about Palo Alto NGFWs’ various options for configuring an IPv6 address on a layer 3 interface. Let’s have a look at some details: I’m using a PA-220 with PAN-OS 10.2.4-h2. My Defaults Normally, I’m enabling IPv6…
