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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
┎╍╍╍╍╍╍╍╍╍╍╍╍╍╍╍┓
┌───────────────┐ ┃ Network ┃
│ table: filter │ ┖━━━━━━━│━━━━━━━┛
│ chain: INPUT ◀────┐ │
└───────┬───────┘ │ │
│ │ ┌─────────▼─────────┐
┌ ▼ ┐ │ │ table: nat │
│local process│ │ │ chain: PREROUTING │
└ ┘ │ └─────────┬─────────┘
│ │ │
▼ │ ▼ ┌─────────────────┐
┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │table: nat │
Routing decision └────── outing decision ─────▶│chain: PREROUTING│
┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ └────────┬────────┘
│ table: filter │ ┖━━━━━━━┳━━━━━━━┛
│ chain: INPUT │◀────┐ │
└───────┬───────┘ │ ▼
│ │ ┌───────────────────┐
┌ ▼ ┐ │ │ table: nat │
│local process│ │ │ chain: PREROUTING │
└ ┘ │ └─────────┬─────────┘
│ │ │
▼ │ ▼ ┌─────────────────┐
┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │table: nat │
Routing decision └───── outing decision ─────▶│chain: PREROUTING│
┅┅┅┅┅┅┅┅┅┳┅┅┅┅┅┅┅┅┅ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ └────────┬────────┘
│ │
│ │
┌───────▼───────┐ │
▼ │
┌───────────────┐ │
│ table: nat │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅ │
│ chain: OUTPUT │ ┌─────▶ outing decision ◀──────────────┘
└───────┬───────┘ │ ┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅┅
└───────┬───────┘ │ ┅┅┅┅┅┅┅┅┳┅┅┅┅┅┅┅┅
│ │ │
┌───────▼───────┐ │ ┌──────────▼─────────┐
│ table: filter │ │ │ table: nat │
│ chain: OUTPUT ├────┘ │ chain: POSTROUTING │
└───────────────┘ └──────────┬─────────┘
│
┎╍╍╍╍╍╍╍▼╍╍╍╍╍╍╍┓
▼ │ ▼
┌───────────────┐ │ ┌────────────────────┐
│ table: filter │ │ │ chain: POSTROUTING │
│ chain: OUTPUT ├────┘ └──────────┬─────────┘
└───────────────┘ │
▼
┎╍╍╍╍╍╍╍╍╍╍╍╍╍╍╍┓
┃ Network ┃
┖━━━━━━━━━━━━━━━┛
```