VPN problem

[madrid272001]

Hi experts,

This is my first time here and hope you can give me a hand.

I am configuring a VPN with my internet provider. I will try to explain how´s everything connected.

At first I have a router (not a very good one, just the one sent by the provider). This router is connected to a fortigate (model 60D, to the WAN1 port) and this fortigate is connected to a switch (through port 1 internal). When everything´s connected, I get no internet. Instead of, if I avoid the fortigate (I just connect the router directly to the switch) everything´s fine.

The fortigate is in transparent mode and it has the same gateway as the router. 

I don´t know what is the problem. I guess something is missing in the configuration but I don´t know what. 

Waiting for your news.

Thanks and best regards,

[madrid272001]

Thanks zhunissov4,

That´s was exactly the way I had configured. I think it´s something related cisco systems. Do cisco systems have any special configuration???.

Best regards,