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[帮助文档] 在Linux系统中,禁止IP或者网段访问服务的方法有哪些

免责声明：本文档可能包含第三方产品信息，该信息仅供参考。阿里云对第三方产品的性能、可靠性以及操作可能带来的潜在影响，不做任何暗示或其他形式的承诺。免责声明：概述本文主要介绍在Linux系统中，禁止IP或者网段访问服务的方法。详细信息阿里云提醒您：如果您对实例或数据有修改、变更等风险操作，务必注意实...

《Linux高性能服务器编程》——2.5　IP转发

2.5　IP转发前文提到，不是发送给本机的IP数据报将由数据报转发子模块来处理。路由器都能执行数据报的转发操作，而主机一般只发送和接收数据报，这是因为主机上/proc/sys/net/ipv4/ip_forward内核参数默认被设置为0。我们可以通过修改它来使能主机的数据报转发功能（在测试机器Ko...

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《Linux高性能服务器编程》——2.3　IP分片

2.3　IP分片前文曾提到，当IP数据报的长度超过帧的MTU时，它将被分片传输。分片可能发生在发送端，也可能发生在中转路由器上，而且可能在传输过程中被多次分片，但只有在最终的目标机器上，这些分片才会被内核中的IP模块重新组装。 IP头部中的如下三个字段给IP的分片和重组提供了足够的信息：数据报标识...

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