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Network Policies - определяет какие Pods и Endpoints могут взаимодействовать по сети друг с другом (такой кластерный firewall). Это очень важная с точки зрения безопасности сущность, которая позволяет реализовать концепцию микросегментации. Сразу стоит учесть, что в Kubernetes есть поддержка (начиная с 1.6), а реализация лежит на CNI плагинах. Забавно что в любом случае можно применить политику, только она не будет действовать если нет поддержки.
По умолчанию, любой Pod не изолирован на получение и отправку данных. В политике можно описать правила как для входящего (ingress), так и исходящего (egress) трафика - работает это по принципу whitelist.
Определенную сложность в чтение политик вносит возможность не объявлять, оставлять пустыми некоторые поля, типа: namespace, PodSelector, policyTypes, что по разному будет влиять в случае ingress и egress трафика.
Для старта можно взять Kubernetes Network Policy Recipes.

k8s (in)security
Network Policies - определяет какие Pods и Endpoints могут взаимодействовать по сети друг с другом (такой кластерный firewall). Это очень важная с точки зрения безопасности сущность, которая позволяет реализовать концепцию микросегментации. Сразу стоит учесть, что в Kubernetes есть поддержка (начиная с 1.6), а реализация лежит на CNI плагинах. Забавно что в любом случае можно применить политику, только она не будет действовать если нет поддержки.
По умолчанию, любой Pod не изолирован на получение и отправку данных. В политике можно описать правила как для входящего (ingress), так и исходящего (egress) трафика - работает это по принципу whitelist.
Определенную сложность в чтение политик вносит возможность не объявлять, оставлять пустыми некоторые поля, типа: namespace, PodSelector, policyTypes, что по разному будет влиять в случае ingress и egress трафика.
Для старта можно взять Kubernetes Network Policy Recipes.
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How to use Telegram to find people near you

Telegram is not only limited to being an instant messaging app between friends and family, but also has a real social component, through which you can meet new people and start conversations. All this through a functionality that integrates. This application is very complete and has many more useful features, like the bots that its main competitors. This is a compelling reason which is why you should download Telegram on any of the available platforms. And this time, we will focus on the function of people nearby. If you want to meet new people and make friends, then this is a feature worth checking out. Next, we will explain in detail how you can use it.

Network Policies - определяет какие Pods и Endpoints могут взаимодействовать по сети друг с другом (такой кластерный firewall). Это очень важная с точки зрения безопасности сущность

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