Final answer:
Proxy access is specified when configuring a computer network or setting up Internet applications for purposes such as security, anonymity, or web scraping. This involves entering details like server address, port number, and credentials in network settings or application configurations.
Step-by-step explanation:
Proxy access is typically specified during the configuration of a computer network or when setting up Internet applications. Proxies act as intermediaries between a user's device and the Internet, allowing for various operations such as improved security, anonymous browsing, or bypassing geo-restrictions. In a business environment, IT administrators configure proxy settings on the network, while individuals may configure proxy access within their browser's settings or through third-party applications.
Additionally, specifying proxy access is essential for activities like web scraping, where proxies are used to avoid IP bans or gather data from websites without being detected. When setting up proxy access, details such as the proxy server address, port number, and possibly credentials for authentication are required. This can be adjusted within the network settings of an operating system or directly in applications that provide options for proxy configuration.