A popular technique for gaining entry into the shopper's system is to use a tool, such as SATAN, to perform port scans on a computer that detect entry points into the machine.

进入购物者系统最常用的方法是使用工具，比如SATAN，在计算机上执行端口检查，找到进入系统的入口点。

youdao

Scans for available ports during installation, configuration, or activation of a product to help prevent port conflicts.

在产品的安装、配置或激活过程中扫描可用的端口，以帮助防止端口冲突。

youdao

Also, it contains descriptions for common ports, and can perform scans on predefined port ranges.

同时，它还包含说明，共同的港口，并可以执行扫描，对预定义的端口范围。

youdao

The continuous port scans, the worm traffic, the DDoS attacks, have to be winnowed down to something actionable.

FORBES: DHS Deploying Wrong Weapons In Cyberwar

Also, Secure-Me-Automated Security Testing offers two free port scans (one lengthy).

CNN: Symantec offers Web-based PC checkups

It is signature based which means it relies on a massive collection of snippets of text and code that researchers have discovered over the years are associated with unwanted network traffic, be it worms, port scans, or intrusions.

FORBES: DHS Deploying Wrong Weapons In Cyberwar