引用:
https://www.bilibili.com/video/BV1Jz4y1u7Lz/?spm_id_from=333.788&vd_source=e05f4a55dd5d8e27f74472aa7fd97ace
1. iptables处理模型:
iptables有四表五链组成:
- filter表:过滤
- nat表:网络地址转换
- mangle表:
- raw表:
- security表:
filter表处理模型:filter表只有三个链: forward, input, output
2. iptables配置顺序:
事例: