Please help,
I can access On-Prem from Azure but I cannot access Azure from On-Prem from firewall level and LAN behind Firewall.
Azure
172.16.0.0/21 - Address space
172.16.1.0/24 - Subnet
172.16.0.0/24 - GW Subnet
NSG in Azure
ICMP and RDP are Any Any Any Allow
VM in Azure
All firewalls are disabled
On-Prem / Fortigate 60E v6.2.3 build1066 (GA)
PPPoE - WAN
192.168.1.0/24 - LAN
Thank you in advance
Nominating a forum post submits a request to create a new Knowledge Article based on the forum post topic. Please ensure your nomination includes a solution within the reply.
Hi
Please check mtu traffic size from On-prem to Azure.
You can try to lower TCP-MSS on policy that allows traffic to go to Azure
Created on 10-06-2022 08:50 AM Edited on 10-06-2022 08:55 AM
Hi
Here is the result of my firewall MTU
the TCP-MSS on policy, what value should I input?
Thanks
Additional info:
What do your route-tables look like in both Azure and on the FTG?
Here:
Please give us the output from the below command.
FW # get router info routing-table database
Here:
Everything looks good on the Fortigate. If you can take a screen shot of the route-table(s) on the Azure side that would work. It could be your not propagating the routes to the vNET from the VNG. By default, the VNG will route RFC1918 back down the S-2-S tunnel so if there is no route for the destination subnet in the VNG route-table it will not reach any host that resides there.
Created on 10-06-2022 01:56 PM Edited on 10-06-2022 02:16 PM
Thank you for confirming the setup from my Fortigate.
Here is the result of the query.
Select Forum Responses to become Knowledge Articles!
Select the “Nominate to Knowledge Base” button to recommend a forum post to become a knowledge article.
User | Count |
---|---|
1547 | |
1031 | |
749 | |
443 | |
210 |
The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.
Copyright 2024 Fortinet, Inc. All Rights Reserved.