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Load Balancer

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Azure load balancer SNAT behavior explained - Annotations to tcp port numbers reused, ACK with wrong sequence number plus RST from 3-way handshake and SNAT port exhaustion

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Azure load balancer SNAT behavior explained - Annotations to tcp port numbers reused, ACK with wrong sequence number plus RST from 3-way handshake and SNAT port exhaustion

This article will address azure external load balancer and focus on SNAT, explains a few of behaviors seen from network trace, provides a few of suggestions for application when it is behind of load balancer and requires SNAT.

Addendum of Azure Load Balancer and NSG Rules

Addendum of Azure Load Balancer and NSG Rules

1 AllowAzureLoadBalancerInBound NSG Rule When an IaaS VM get deployed in Azure, there will be a default NSG rule AllowAzureLoadBalancerInBound created You might wonder what's the meaning of this NSG rule? Well, basically this rule means allow "Azure Load Balancer Health Probe". When an Azure Load Balancer get created, it