防火墙讲义PPT
这是关于防火墙技术的一个PPT讲义，介绍了防火墙的核心技术以及相关的NAT、ALG、ASPF.介绍内容对比详细，值得下载！(This is a PPT handout about firewall technology, which introduces the core technology of firewall and related NAT, ALG, ASPF. The content of the introduction is detailed and worth downloading!)
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