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Forwarded from Записки админа

Обнаружилась очень удобная утилита для работы с подсетями и IP адресами:

https://github.com/firehol/iprange/

Умеет вычислять нужные подсети из разных диапазонов, что порой бывает необходимо, например, при работе с ipset и фаерволом на сервере.

В wiki проекта, в разделе Reducing ipsets, есть примеры оптимального вычисления нужных подсетей:

https://github.com/firehol/iprange/wiki#reducing-ipsets

#ipset #iprange #iptables

GitHub - firehol/iprange: manage IP ranges

manage IP ranges. Contribute to firehol/iprange development by creating an account on GitHub.

3 views10:47

https://www.karlrupp.net/en/computer/nat_tutorial
#iptables #fw #linux #cli #nat

26 views12:47

https://blog.daknob.net/debian-firewall-docker/
#docker #iptables #firewall

38 views11:00

https://blog.donnex.net/docker-and-iptables-filtering/
#docker #iptables #firewall

Docker iptables filtering fixed in Docker 17.06

A huge pain point with Docker since day one has always been the ability to do iptables filtering of incoming traffic. Exposed ports were not filtered, rules could not persist a Docker daemon restart and no easy way to do filtering based on IP etc. The actual…

40 views13:04

http://jekor.com/gressgraph/
#iptables #visualizer #graphviz #service #online

39 viewsedited 15:38

http://jekor.com/gressgraph/
#iptables #visualizer #graphviz #service #online

40 views15:39

https://msazure.club/kubernetes-services-and-iptables/
#k8s #kubernetes #iptables

Unofficial Azure Club

Kubernetes Services and Iptables

0 Prerequisites and Prework
This post only focuses on how kubernetes leverages iptables to implement its
service mode. Per official doc Services
[https://kubernetes.io/docs/concepts/services-networking/service/]

> A Kubernetes Service is an abstraction which…

39 viewsedited 06:09

https://docs.google.com/drawings/d/1MtWL8qRTs6PlnJrW4dh8135_S9e2SaawT410bJuoBPk/edit
#k8s #kubernetes #nat #iptables #flow

141 viewsfl64, 08:17

https://rtfm.co.ua/kubernetes-service-balansirovka-nagruzki-kube-proxy-i-iptables/
#kubernetes #k8s #services #lb #iptables

RTFM: Linux, DevOps и системное администрирование | DevOps-инжиниринг и системное администрирование. Случаи из практики.

Kubernetes: Service, балансировка нагрузки, kube-proxy и iptables

Что такое kube-proxy, как работает балансировка нагрузки на поды в Kubernetes, и зачем нужен iptables.

148 viewsfl64, 08:19

https://github.com/il-da-r/dockerufw
#docker #ufw #iptables #github

GitHub - il-da-r/dockerufw: Исправить ошибку безопасности Docker и UFW без отключения Iptables в Ubuntu

Исправить ошибку безопасности Docker и UFW без отключения Iptables в Ubuntu - il-da-r/dockerufw

213 viewsfl64, 08:32

https://dustinspecker.com/posts/iptables-how-kubernetes-services-direct-traffic-to-pods/
#k8s #kubernetes #iptables

iptables: How Kubernetes Services Direct Traffic to Pods

This is the third part of a series on Docker and Kubernetes networking. We’ll be tackling how Kubernetes’s kube-proxy component uses iptables to direct service traffic to pods randomly. We’ll focus on the ClusterIP type of Kubernetes services.
The goal of…

172 viewsfl64, 07:22

https://jimmysong.io/en/blog/sidecar-injection-iptables-and-traffic-routing/
#istio #iptables

Understanding the Sidecar Injection, Traffic Intercepting & Routing Process in Istio | Jimmy Song

Learn the sidecar pattern, transparent traffic intercepting and routing in Istio.

222 viewsfl64, 18:28