A topologia é a mesma para ambos os exemplos, que é um túnel L2L entre o Cisco IOS e o strongSwan. O tráfego é protegido entre 192.168.1.0/24<->192.168.2.0/24. VPNs IPSec L2L de origem aberta Há vários projetos de código aberto que utilizam protocolos de Internet Key ...
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目前大家经常使用的Excel列名与列号转换算法都至少包含一个循环算法的时间复杂度远大于O(1),众所周知Excel的列数是有上限的,既然是有穷的那么很显然我们可以做到O(1)转换列名与列号。 首先我们获取列号的上限,打开Excel按 Ctrl + → 切换到最后一列发现列名为XFD 通过常
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