Built-in NSG outbound rule at priority 65000 that lets VMs open connections towards their own VNet and peered VNets. The NSG at the destination still has to permit the port.
Read more: Microsoft Learn
In the Ultra Transcenders books
Each book explains AllowVnetOutBound in context, with comparison tables and the common traps.
Terms in this definition
- Default security rules
Built-in NSG rules at priorities 65000-65500: AllowVnetInBound, AllowAzureLoadBalancerInBound and DenyAllInBound, plus AllowVnetOutBound, AllowInternetOutBound and DenyAllOutBound. Removal is impossible; custom rules at 100-4096 take precedence.
- Priority
Routing method in Traffic Manager for active/passive failover: traffic goes to whichever healthy endpoint has the highest priority.
- Virtual machines
Infrastructure-as-a-service compute giving complete control of the operating system, making it a fit for lift-and-shift moves and for software relying on OS-level pieces like COM.
- VNet
A private network belonging to a single subscription and region and covering all of that region's availability zones. A VM can only use a VNet located in the same region.