Great news – now Fortigate supports exporting data flows statistics to an external server using sFlow protocol (twin of Netflow from the Cisco world). I configured it in about a minute and it just works. To collect the sFlow data I use nfdump/Nfsen , that I found to be the most …

Fortinet are doing a lot to keep us away from the command line. And that’s ok in 95% of the cases. But sooner or later you come to meet the 5% of the bad and the ugly when you have no access to the GUI at all. One late …

While I don't like going down to Layer 2 , recently I had to do it - I didn't know IP address of the Cisco router I wanted to connect to but I had access to the Cisco router sitting in the same network. That would be pretty easy to do #show …

Updated for 2022. Some links to download Microsoft Visio stencils of the most popular vendors. Juniper Cisco Avaya BlueCoat Fortinet Palo Alto Networks Dell Requires registration Checkpoint happen not to have official stencils set, only Nokia appliances stuff can be found. So someone volunteered and using icons/press releases/PowerPoint …

Everyone today speaks BGP: Cisco ,Juniper and ScreenOS firewalls, Fortigate does it, even SonicWall have it as planned feature. The opportunity to see how it works on Fortinet Fortigate firewall recently presented itself and here is the sum up of how I configured and debugged Fortigate BGP set up. Task …

Once upon a time reading some CCIE paper at work I asked myself a question : “Why would someone bother to invent ttl-security and even write RFC 5082 The Generalized TTL Security Mechanism (GTSM) about it when multi-hop EBGP feature provides the same end result ?” . First some background. For some reasons …

UPDATE 2019: I updated the access details below. Also, if you work for a Fortinet partner you can request access to the demo appliances via Partner's Portal. As someone said best things in life are free. Here are links to the demo Forigate firewall, ForiAnalyzer and FortiManager open to access …

Recently I had to do late night restart of a Fortigate and was looking for "Reload in..." I found it, but in Fortigate it is a little different. It's called Daily Restart, and if you want to use it once you need to remember to remove this command later. config …

Linux Windows FreeBSD Solaris CISCO routers (IOS) Juniper routers (JunOS) Ping. Many times while debugging network problems of various kinds you need to send some packets of desirable size and don’t fragment bit being set. I list below how to do it for the different equipment/OSes. Let’s …

Note: This post was written for FortiOS version 2.8 and 3.x so some commands have changed, for updated debug steps please read Failed to connect to Fortiguard servers verification and debug updated Today I encountered otherwise easy to diagnose misconfiguration only that Fortinet decided to 'hide' this parameter …