Spoke can't reach on-premises
Problem
vm-spoke1 can't reach srv-onprem on 443, though hub VMs can.
Your job
- Get vm-spoke1 reaching srv-onprem on 443
Without breaking
- Don't give vnet-spoke1 a gateway of its ownbroken
Background
The hub has a VPN gateway, vgw-hub, connected to the on-premises site. VMs in the hub reach srv-onprem fine. vm-spoke1 needs srv-onprem on 443 too, and nobody wants a second gateway. The spoke was rebuilt last month with a hardened NSG template.
How to work it
- 1See it fail
Prove the problem yourself before you change anything. Reports are often wrong.
VM commands forVMsssh vm-spoke1What's this?
Opens a shell on vm-spoke1, so the next commands run on that VM. In this lab it's a shortcut. In real Azure you'd connect through something like Azure Bastion, or SSH to an address you can reach.
nc -zv 192.168.10.5 443What's this?
netcat, a standard Linux tool. Tries to open a TCP connection and reports whether it worked.
-zonly check whether the port answers. Send no data-vprint the result in words192.168.10.5where to connect443the port to try
Ticks off when the test runs on vm-spoke1.
- 2Find where it stops
- 3Name the cause
- 4Fix it and test again
- 5Explain it
0/3 changes
Network map
?
- Resource group, the outer dashed frame
- Virtual network, with its address space top right
- Subnet, with range and usable IPs (5 reserved)
- Network security group. A small shield on a VM's NIC means the NIC has one too
- Route table on the subnet
- VM Appliance Private endpoint
- Peering Connected Initiated or access off
- Goal working Goal broken, X marks where it stops
- Private DNS zone, dotted lines go to linked VNets
- Orange pulse: what your last command changed. Drag to pan, Ctrl and scroll to zoom.
vm-spoke1 → srv-onprem:443should work: not working
Goals 0/3
Cloud Shell · bashVMsrg-lab · eastus2
cloudshell:~$