<p>I understand that pods are isolated into another subnet (POD-CIDR, CNI...)
Is that possible to reach a pod (using a tool)? I saw that you can use ClusterIP, LB, Externalname, but I cannot reach my pod's ipaddress.</p>

<p>that means something is wrong with your networking. Kubernetes imposes the following fundamental requirements on any networking implementation (barring any intentional network segmentation policies):</p>

<ol>
<li>all containers can communicate with all other containers without NAT</li>
<li>all nodes can communicate with all containers (and vice-versa) without NAT</li>
<li>the IP that a container sees itself as is the same IP that others see it as</li>
</ol>

<p><a href="https://kubernetes.io/docs/concepts/cluster-administration/networking/" rel="nofollow noreferrer">https://kubernetes.io/docs/concepts/cluster-administration/networking/</a></p>
