The intranet site is down
Problem
The office can't open the intranet site.
Your job
- Get vm-user opening the intranet on vm-intranet (443)
Without breaking
- Keep SSH from users to vm-intranet blockedbroken
- Change only what is actually brokenbroken
Background
"The intranet has been down for the whole office since this morning. Is the network broken again?" The site runs on vm-intranet (10.1.1.4) over HTTPS. Office users sit in subnet-users, like vm-user. Users must never get SSH to the server.
How to work it
- 1See it fail
Prove the problem yourself before you change anything. Reports are often wrong.
VM commands forVMs: Linuxssh vm-userWhat's this?
Opens a shell on vm-user, 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 10.1.1.4 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 words10.1.1.4where to connect443the port to try
Ticks off when the test runs on vm-user.
- 2Find where it stops
- 3Name the cause
- 4Fix it and test again
0/1 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-user → vm-intranet:443should work: not workingvm-user → vm-intranet:22should stay blocked: blocked
Goals 0/3
Cloud Shell · bashVMs: Linuxrg-lab · eastus2
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