3.png title="Introduction of the egress gateway to access MongoDB"><img class=element-to-stretch src=/v1.1/blog/2019/egress-performance/./case3_egressgw3.png alt="Introduction of the egress gateway to access MongoDB"></a></div><figcaption>Introduction of the egress gateway to access MongoDB</figcaption></figure><h3 id=case-4-mutual-tls-between-sidecars-and-the-egress-gateway>Case 4: Mutual TLS between sidecars and the egress gateway</h3><p>In this case, there is an extra layer of security between the sideca