漏洞扫描器类似于其他类型的扫描器——例如，端口扫描器有助于保障端口上的网络和系统的安全。
A vulnerability scanner is similar to other types of scanners-for example, port scanners help secure the network and the systems on it.
对于防御拒绝服务攻击与端口扫描，我们在网络层与传输层分别采取相应的措施进行防范。
For defending denial of service attack and ports scanning, we adopt corresponding measures in network layer and transport layer.
系统分为四个模块：计算机在线检测模块、计算机端口扫描模块、远程安装模块、网络数据包控制模块。
The system divides into four modules: on-line computer examination module, computer port scanned module, remote installation module and network control module.
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