Fortigate blocking IPTV connection

[nabs]

Hello

I am new to fortinet and recently placed a fortinet device in my home network. It is a very simple setup to get me started and try more ambitious things later. The ISP router is having the WAN connection to the internet and the LAN side connects to the fortinet. All home devices are then connected to the LAN of the fortinet (no DMZ or other zones setup for now). With a simple allow for lan to wan rule in the firewall, all devices are able to communicate with the internet. 

However, the IPTV box has stopped working, i am guessing here there is something to do with multicast that is getting blocked here. If I remove the fortinet between the home network and the ISP router, IPTV box works normally and all the channels can be viewed but as soon as the fortinet is brought back in it stops working.
Looking forward to get this to work and appreciate your help.

[Vichu_94]

Hi Nabs,

Please try to configure a multicast policy on the firewall and check if that helps to pass the traffic through the firewall for the IPTV

https://docs.fortinet.com/document/fortigate/6.2.5/cookbook/968606/configuring-multicast-forwarding

Regards

[nabs]

Hello Vishal

Thanks for sharing the document. I did had a look at this document already and I only applied the first half part of the changes suggested, didnt realise there are 2 steps. I will try the second set of instructions shortly and will try to see if it works.

[nabs]

OK, there is some progress but still got issues. 

With the config now added the channels come up with signal but exactly after 5 - 6 seconds the signal drops out and i get a message signal lost and this is happening for all the channels. Below is the config I added