network policy doesn't impact

Summary:

i have applied network policy for specific name space to deny all trraifc, but seems doesn't make any impact

after apply it , i can simply telnet test-np from default namespace !!

Content (required):

apiVersion: networking.k8s.io/v1

kind: NetworkPolicy

metadata:

 name: default-deny-ingress

 namespace: test-np

spec:

 podSelector: {}

 policyTypes:

 - Ingress

Version (include the version you are using, if applicable):

k8s version v1.26.2

Code Snippet (add any code snippets that support your topic, if applicable):