Block CIDRs in ingress-nginx

[xluffy]

Block CIDRs in Ingress nginx with block-user-agents

	ginkgo.It("should block CIDRs defined in the ConfigMap", func() {
		f.UpdateNginxConfigMapData("block-cidrs", "172.16.0.0/12,192.168.0.0/16,10.0.0.0/8")

		f.WaitForNginxConfiguration(
			func(cfg string) bool {
				return strings.Contains(cfg, "deny 172.16.0.0/12;") &&
					strings.Contains(cfg, "deny 192.168.0.0/16;") &&
					strings.Contains(cfg, "deny 10.0.0.0/8;")
			})

		f.HTTPTestClient().
			GET("/").
			WithHeader("Host", host).
			Expect().
			Status(http.StatusForbidden)
	})

https://github.com/kubernetes/ingress-nginx/blob/7f723c59855e82614582ff7b2efd1783b1afc2ee/test/e2e/settings/global_access_block.go#L39

And wow, I don't know about denylist-source-range (Sets the default denylisted IPs for each server block)