| 摘要 |
Control and management of communication traffic. IP packet filtering occurs in an operating system kernel implementation of, for example, the TCP/IP protocol suite. Access rules are expressed as filters referencing system kernel data; for outbound processing, source application indicia is determined; for inbound packet processing, a look-ahead function is executed to determine target application indicia; and responsive to the source or target application indicia, filter processing is executed.
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