Internet filtering is the process of controlling access to online content by blocking or allowing specific websites, applications, or types of information. This can be done by individuals, organizations, or governments to protect users from harmful content, maintain productivity, or enforce legal regulations. Filters can be applied through software or hardware solutions, often using keywords, categories, or user-defined settings. While internet filtering can help safeguard users, it may also limit access to valuable information and restrict freedom of expression, leading to debates about censorship and privacy in the digital age.