IP Whitelisting Using Istio Policy On Kubernetes Microservices

Recently, we explored Preserving the Source IP address on AWS Classic Loadbalancer and Istio’s envoy using the proxy protocol in our first Part. Continuing to the second part of this series, we will look at How can we apply IP whitelisting on the Kubernetes microservices!

Problem Statement:

There are some microservices behind an internet-facing loadbalancer that we want to have limited access to, based on source IP address. This will prevent our microservices from unauthorized access.

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Preserve Source IP In AWS Classic Load-Balancer And Istio’s Envoy Using Proxy Protocol

Preserving Source IP address is an important factor in a live environment because the IP address is one of the things which enables you to do some advanced stuff like:

Security: Security is an important factor which we cannot ignore. With the Source IP you can white list the access to the applications which are behind the internet-facing load balancer.

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Raktbeej Proxy

All we could think of imagining a routine day of a NOC guy is looking at all the fancy and colorful multiple screens around, but is this all it?

The answer to the above statement is NO! As a NOC, We have access to the information that is critical to analyze and plot company infra strength and on top of that, access to the servers and protected network makes the situation more critical if thing happens to be in wrong hands.

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