Unable to access AVD servers from on prem via direct RDP

[LukeTan]

We have created an AVD solution and created a site to site VPN so the AVD's can connect into the network shares which is working a dream.

However the issue we are having is we cant ICMP or RDP to the AVD servers directly from on prem. I can confirm all the NSG's are setup correctly, windows firewall is setup correctly and the routing on prem is correct. Does Azure prevent this type on functionally? Our other VM ins in Azure work as expected but the AVD VMs are not working this way.

[#2]

just to be sure, you are trying to connect with the AVD client to the AVD hosts? Or are you using the mstsc client?

[#3]

Maybe its missing inbound port 3389? Make sure within the virtual machine firewall its listening on windows firewall on port 3389?

[#4]

@LukeTan 

Please refer below article on necessary port and URL release on AVD remote access:

Required URLs for Azure Virtual Desktop | Microsoft Learn