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Update iptables.md

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小弟调调™ 2017-07-19 03:02:40 +08:00 committed by GitHub
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@ -68,31 +68,32 @@ iptables -t 表名 <-A/I/D/R> 规则链名 [规则号] <-i/o 网卡名> -p 协
```bash ```bash
┎╍╍╍╍╍╍╍╍╍╍╍╍╍╍╍┓ ┎╍╍╍╍╍╍╍╍╍╍╍╍╍╍╍┓
┌───────────────┐ ┃ Network ┃ ┌───────────────┐ ┃ Network ┃
│ table: filter │ ┖━━━━━━━│━━━━━━━┛ │ table: filter │ ┖━━━━━━━┳━━━━━━━┛
│ chain: INPUT ◀────┐ │ │ chain: INPUT │◀────┐ │
└───────┬───────┘ │ │ └───────┬───────┘ │ ▼
│ │ ┌─────────▼─────────┐ │ │ ┌───────────────────┐
┌ ▼ ┐ │ │ table: nat │ ┌ ▼ ┐ │ │ table: nat │
│local process│ │ │ chain: PREROUTING │ │local process│ │ │ chain: PREROUTING │
└ ┘ │ └─────────┬─────────┘ └ ┘ │ └─────────┬─────────┘
│ │ │ │ │ │
▼ │ ▼ ┌─────────────────┐ ▼ │ ▼ ┌─────────────────┐
┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │table: nat │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │table: nat │
Routing decision └────── outing decision ─────▶│chain: PREROUTING│ Routing decision └───── outing decision ─────▶│chain: PREROUTING│
┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ └────────┬────────┘ ┅┅┅┅┅┅┅┅┅┳┅┅┅┅┅┅┅┅┅ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ └────────┬────────┘
│ │ │ │
│ │ ▼ │
┌───────▼───────┐ │ ┌───────────────┐ │
│ table: nat │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │ │ table: nat │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │
│ chain: OUTPUT │ ┌─────▶ outing decision ◀──────────────┘ │ chain: OUTPUT │ ┌─────▶ outing decision ◀──────────────┘
└───────┬───────┘ │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ └───────┬───────┘ │ ┅┅┅┅┅┅┅┅┳┅┅┅┅┅┅┅┅
│ │ │ │ │ │
┌───────▼───────┐ │ ┌──────────▼─────────┐ ▼ │ ▼
│ table: filter │ │ │ table: nat │ ┌───────────────┐ │ ┌────────────────────┐
│ chain: OUTPUT ├────┘ │ chain: POSTROUTING │ │ table: filter │ │ │ chain: POSTROUTING │
└───────────────┘ └──────────┬─────────┘ │ chain: OUTPUT ├────┘ └──────────┬─────────┘
│ └───────────────┘ │
┎╍╍╍╍╍╍╍▼╍╍╍╍╍╍╍┓ ▼
┎╍╍╍╍╍╍╍╍╍╍╍╍╍╍╍┓
┃ Network ┃ ┃ Network ┃
┖━━━━━━━━━━━━━━━┛ ┖━━━━━━━━━━━━━━━┛
``` ```