Fortinet NSE4 Training - Reverse Path Failure (RPF)

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Reverse Path filter or Reverse Path Failure (aka RPF) can be a tricky concept to grasp. In this video I provide some examples with short, concise explanations that will help you understand what RPF is and why we use it.
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[@TomWhi]

I'm glad you went with a diagram because I think it lands so much better than I can imagine a demo would. I got a question on the NSE4 on RPF and yours was the first video that made sense.

[@RedEyeCoding]

man... do you have any idea how LOOOOONG!!!!!!! i've been looking for a clear explanation. So many folks on here (youTube) make it difficult to understand....geez. thank you so much.

[@robertchism9987]

Wow. This was good, Chris! Very simple explanation. Thank you.

[@InfoSecforHumans]

Thanks Robert, its a remarkably simple concept...just not easy to grasp!

[@saifemran4528]

Another great video. Thank you, Chris!

[@anthonywainman5200]

Fantastic Vid! A clear and concise explanation... this really helped me understand RPF. Thanks Chris.

[@InfoSecforHumans]

Hey Anthony, glad it helped! RPF had me running in circles when I first ran into it. I had to make a video about this :)

[@kmcgaughmohr]

Thanks for the easy and clear explanation!

[@GGoblin]

The most easy explanation on RPF ever, thank you very much sir! This helps with refreshing nse4 knowlegde for NSE7 cert :)

[@deepakkhadka9984]

Very easy to understand .. Great explanation.

[@networkengineerblogs6670]

A few people have asked how it works with a default route. In feasible/loose mode it will be no different for a default route. The default route counts as a valid route. Source: NSE4 study guide.

[@EdgarRdz7]

Thanks for the video !

[@jensterndrup590]

Got if! Thank you 😊

[@dermyan42]

Great explanation. Just what I was hunting around for. I wonder though, what impact does a default route have route matching?

[@henryldr]

It was so usefull thank you so much.

[@MutedChaff]

If you need, I am selling a voucher for the fortinet NSE4 exam

[@user-pw7cx4vy4d]

nice video I get it now

[@ajeesh2050]

Hi Chris ,my doubt is when a default route to internet like Destination=0.0.0.0/0 and exit interface wan .How the RPF will work here ,for example the fortigate have a default route to internet like this set status enable set dst 0.0.0.0 0.0.0.0 set gateway 218.208.110.1 set distance 10 set weight 0 set priority 0 set device "wan2"

[@ale18309]

Can you recommend a good book for the ns4?

[@shom3rshabbos]

good video. pls make more for the lab setup used in previous video's. also are there books you used to pass the exam?

[@InfoSecforHumans]

I used the free training that you can get from the NSE Institute. I don't think there are any books on this cert yet, but I could be wrong.

[@shom3rshabbos]

Ok cool i will use that also. Could you do some basic firewall and maybe some advanced stuff and could you do traffic shaping? I will need to know it for a job im starting next month

[@InfoSecforHumans]

@@shom3rshabbos Hell yeah man! Lets see what we can do...

[@kapilyadav5174]

Global objects

[@anonymoususer6786]

Not clear or helpful and wastes too much time at the beginning .

[@MutedChaff]

If you need, I am selling a voucher for the fortinet NSE4 exam