iptables
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root@cloud:~# iptables -t nat -L POSTROUTING -n --line-number Chain POSTROUTING (policy ACCEPT) num target prot opt source destination 1 KUBE-POSTROUTING all -- 0.0.0.0/0 0.0.0.0/0 /* kubernetes postrouting rules */ 2 MASQUERADE all -- 172.17.0.0/16 0.0.0.0/0 3 RETURN all -- 10.244.0.0/16 10.244.0.0/16 4 MASQUERADE all -- 10.244.0.0/16 !224.0.0.0/4 5 RETURN all -- !10.244.0.0/16 10.244.0.0/24 6 MASQUERADE all -- !10.244.0.0/16 10.244.0.0/16 root@cloud:~# iptables -t filter -L INPUT -n --line-number Chain INPUT (policy ACCEPT) num target prot opt source destination 1 KUBE-SERVICES all -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW /* kubernetes service portals */ 2 KUBE-EXTERNAL-SERVICES all -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW /* kubernetes externally-visible service portals */ 3 KUBE-FIREWALL all -- 0.0.0.0/0 0.0.0.0/0 4 DROP tcp -- 210.22.22.150 0.0.0.0/0 tcp dpt:10000 5 DROP tcp -- 210.22.22.150 0.0.0.0/0 tcp dpt:10004 root@cloud:~#
root@cloud:~# iptables -t filter -D INPUT 4 root@cloud:~# date Tue May 18 16:50:21 CST 2021 root@cloud:~# iptables -t filter -L INPUT -n --line-number Chain INPUT (policy ACCEPT) num target prot opt source destination 1 KUBE-SERVICES all -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW /* kubernetes service portals */ 2 KUBE-EXTERNAL-SERVICES all -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW /* kubernetes externally-visible service portals */ 3 KUBE-FIREWALL all -- 0.0.0.0/0 0.0.0.0/0
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