You can do a port scan on all hosts that you check or just an individual host.
您可以对所检查的所有主机、或者单个主机进行端口扫描。
The attacker then sends a packet full of SACK options designed to force the other host to scan that entire queue to process each option.
然后攻击者发送一个充满SACK选项的包，目的是使另一方主机扫描整个队列以处理每个选项。
The simplest form of a TCP port scan is to open a connection to all ports on a host.
TCP端口扫描的最简单形式是打开一个到主机所有端口的连接。
Whenever I go through the takeout dance with a host (she retrieves my food, I pay—inevitably with a credit card— and my eyes scan down to that darned gratuity line), I feel anxious.
每当我去外卖老板娘那里打包的时候（她点清我的食品，我给钱~~不可避免地用信用卡~然后我就瞄到了可恨的小费那栏），我感觉到忧虑。
As described earlier, a single pass of either the host or port scanning information is only useful for the instant in time when the scan was executed.
如前所述，如果只进行一次扫描，那么主机或者端口扫描信息仅在执行该次扫描的时候是有用的。
Then, the security scan technologies based on host and network were further researched, and the contrast of these two technologies and then introduces the popular scanner were analyzed.
然后深入研究了基于网络的安全扫描与基于主机的安全扫描两种技术，并分析了两种技术的对比，对两种技术中流行的安全扫描工具进行了研究。
You scan from a central host on each segment and report back to the main installation.
你回主安装扫描从中央的主机，每一段和报告。
You scan from a central host on each segment and report back to the main installation.
你回主安装扫描从中央的主机，每一段和报告。
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