With a Standard Load Balancer, these define explicit outbound SNAT so backend pool VMs reach out via the frontend public IPs.
Read more: Microsoft Learn
In the Ultra Transcenders books
Each book explains Outbound rules in context, with comparison tables and the common traps.
Terms in this definition
- Azure Load Balancer
Layer-4 load balancer operating within a region, with zone redundancy on the Standard SKU; it has no WAF, doesn't terminate TLS and can't route by URL.
- DEFINE
An optional keyword at the start of a DAX query, placed before the first EVALUATE, for declaring things such as measures and variables that exist only for that query. A measure declared this way replaces a model measure with the same name just while the query runs.
- SNAT
Translating the source address of a flow. Azure Firewall does this automatically to its public IP for outbound internet traffic, and NAT gateway supplies SNAT ports for outbound connections.
- Backend pool
Targets of a load balancer, identified by IP address or NIC IP configuration. A pool can't span VNets, and a Standard load balancer won't accept a VM that has a Basic public IP.
- 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.
Related terms
- Network Watcher effective security rules
Shows, for one NIC of a running VM, the combined inbound and outbound rules drawn from subnet and NIC NSGs and from Virtual Network Manager admin rules. No flow is tested; it simply lists them.
- Private subnet
Subnet in which default outbound access is off. Internet access for its VMs must come from a public IP, a NAT gateway or Standard Load Balancer outbound rules.