Fortinet
FCSS_CDS_AR-7.6 · Question #51
A VM in Azure is failing to communicate with other VMs in the same subnet. What is the most likely cause?
The correct answer is D. A network security group (NSG) has overridden the default intrasubnet communication rule. In Azure, VMs in the same subnet can communicate by default. If communication fails, it is usually because an NSG has overridden the default allow-intrasubnet rule, blocking traffic between the VMs.
FortiGate-VM Architectures in Azure
Question
A VM in Azure is failing to communicate with other VMs in the same subnet. What is the most likely cause?
Options
- ASome of the VMs are beyond your allowed quota for the Azure region.
- BThere is at least one user-defined route blocking traffic within the subnet.
- CThe VMs do not have a public IP address configured.
- DA network security group (NSG) has overridden the default intrasubnet communication rule.
How the community answered
(37 responses)- A3% (1)
- B5% (2)
- C11% (4)
- D81% (30)
Explanation
In Azure, VMs in the same subnet can communicate by default. If communication fails, it is usually because an NSG has overridden the default allow-intrasubnet rule, blocking traffic between the VMs.
Topics
#Azure NSG#intrasubnet communication#user-defined routes#VM connectivity
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