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iptables整休模块链表结构图

2009-11-24 12:40:40| 分类： iptables | 标签： |举报 |字号大中小订阅

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Network
                    -----------+-----------
                               |
                     +---------+---------+
                     |     PREROUTING    |
                     | +-------+-------+ |
                     | |   conntrack   | |
                     | +-------+-------+ |
                     | |    mangle     | | <- MARK WRITE
                     | +-------+-------+ |
                     | |      IMQ      | |
                     | +-------+-------+ |
                     | |      nat      | | <- DEST REWRITE
                     | +-------+-------+ |     DNAT or REDIRECT
                     +---------+---------+
                               |
                       +-------+-------+
                       |    ipchains   |
                       |     input     |
                       +-------+-------+
                               |
                       +-------+-------+
                       |      QOS      |
                       |    INGRESS    |
                       +-------+-------+
                               |
         packet is for +-------+-------+ packet is for
          this machine |     INPUT     | another address
        +--------------+    ROUTING    +--------------+
        |              |    + PDBB     |              |
        |              +---------------+              |
+-------+-------+                                     |
|     INPUT     |                                     |
| +-----+-----+ |                                     |
| |   filter | |                                     |
| +-----+-----+ |                                     |
+-------+-------+                                     |
        |                                             |
+-------+-------+                                     |
|     Local     |                             +-------+-------+
|    Process    |                             |    FORWARD    |
+-------+-------+                             | +-----+-----+ |
        |                                     | | mangle   | | <- MARK WRITE
+-------+-------+                             | +-----+-----+ |
|    OUTPUT     |                             | | filter   | |
|    ROUTING    |                             | +-----+-----+ |
+-------+-------+                             +-------+-------+
        |                                             |
+-------+-------+                                     |
|     OUTPUT    |                             +-------+-------+
| +-----------+ |                             |    ipchains   |
| | conntrack | |                             |    forward    |
| +-----+-----+ |                             +-------+-------+
| |   mangle | | <- MARK WRITE                       |
| +-----+-----+ |                                     |
| |    nat    | | <-DEST REWRITE                      |
| +-----+-----+ |     DNAT or REDIRECT                |
| |   filter | |                                     |
| +-----+-----+ |                                     |
+-------+-------+                                     |
        |                                             |
        +------------------+       +------------------+
                           |       |
                        +--+-------+--+
                        |   ipchains |
                        |    output   |
                        +------+------+
                               |
                     +---------+---------+
                     |    POSTROUTING    |
                     | +-------+-------+ |
                     | |    mangle     | | <- MARK WRITE
                     | +-------+-------+ |
                     | |      nat      | | <-SOURCE REWRITE
                     | +-------+-------+ |     SNAT or MASQUERADE
                     | |   conntrack   | |
                     | +-------+-------+ |
                     | |      IMQ      | |
                     | +-------+-------+ |
                     +---------+---------+
                               |
                        +------+------+
                        |     QOS     |
                        |    EGRESS   |
                        +------+------+
                               |
                    -----------+-----------
                            Network

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