Hi everyone,
I'd appreciate some help over this problem.
We use 3 DNS servers : 1 FortiGate DNS Server, and 2 DCs DNS. We can only use 2 IPs on most of our equipment, and we want to have FortiGate IP + Virtual IP (Load balancing to both DCs).
This means to stay on our LAN (X.X.0.0/16) only, and the VIP would be on the same network as the real servers.
Here is a scheme to get a better idea:
So for now I followed more or less this technical tip I found : https://community.fortinet.com/t5/FortiGate/Technical-Tip-VIP-IP-virtual-server-type-on-the-same-int...
I do have a Virtual server, and a corresponding address. Here are my configurations :
VIP:
Address:
Policies:
The issue is, whether from vlan10 or vlan213, I can't access at all to my VIP. The thing is, I am getting timed out and I'm not receiving a destination unreachable error. Still, the Hit count of my vip or the traffic trough my policies stays at 0.
Any hints on what I could try to do, check or change ?
Thanks a lot.
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Hi Greed
Check if arp reply is enabled on the VIP, and enable it if it is disabled..
config firewall vip
edit "VIP Domain Controllers"
set arp-reply enable
next
end
Besides, the destination in your firewall rules should be the VIP/VS object, not the address object.
Hi AEK,
Thanks a lot for the answer. The ARP Reply was already enabled.
About the firewall policies, I can only put the address for the VLAN10 -> VLAN213 for example. That is why I created it to begin with, following the tip page I linked.
In facts, I can only add my VIP as a destination when the source interface is my VLAN213.
Can you disable health-check and try again?
And it actually worked!
The issue comes from the DNS Check. The other 3 are fine.
I might need some guidance on understanding why it wouldn't, knowing that DNS requests are working without the check activated.
I tried putting my VIP as the unique DNS on a test machine and it could resolve everything I need without any issue or delay. That's great, thanks !
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