Skip to content

CSS-Networking: Update SNAT for Outbound Connections #127760

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

CSS-Networking: Update SNAT for Outbound Connections #127760

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 5 additions & 5 deletions articles/load-balancer/load-balancer-outbound-connections.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -22,10 +22,10 @@ The following methods are Azure's most commonly used methods to enable outbound
| # | Method | Type of port allocation | Production-grade? | Rating |
| -- | ------------------------------------------------------------------------------------------------ | ----------------------- | ---------------------- | ------ |
| 1 | Associate a NAT gateway to the subnet | Dynamic, explicit | Yes | Best |
| 1 | Assign a public IP to the virtual machine | Static, explicit | Yes | OK |
| 1 | Use the frontend IP address(es) of a load balancer for outbound via outbound rules | Static, explicit | Yes, but not at scale | OK |
| 1 | Use the frontend IP address(es) of a load balancer for outbound without outbound rules | Static, Implicit | No | Worst |
| 1 | [Default outbound access](../virtual-network/ip-services/default-outbound-access.md) | Implicit | No | Worst |
| 2 | Assign a public IP to the virtual machine | Static, explicit | Yes | OK |
| 3 | Use the frontend IP address(es) of a load balancer for outbound via outbound rules | Static, explicit | Yes, but not at scale | OK |
| 4 | Use the frontend IP address(es) of a load balancer for outbound without outbound rules | Static, Implicit | No | Worst |
| 5 | [Default outbound access](../virtual-network/ip-services/default-outbound-access.md) | Implicit | No | Worst |

:::image type="content" source="./media/load-balancer-outbound-connections/outbound-options.png" alt-text="Diagram of Azure outbound options.":::

Expand Down Expand Up @@ -174,7 +174,7 @@ In the example in the following table, a backend instance with private IP 10.0.0
| Flow | Source tuple | Source tuple after SNAT | Destination tuple |
| ---- | ------------ | ----------------------- | -------------------- |
| 1 | 10.0.0.1:80 | 192.0.2.0:1 | 23.53.254.142:80 |
| 1 | 10.0.0.1:80 | 192.0.2.0:1 | 26.108.254.155:80 |
| 2 | 10.0.0.1:80 | 192.0.2.0:1 | 26.108.254.155:80 |

## Constraints

Expand Down