In networking, a blacklist and a whitelist are often used in network security settings to control access to the internet or network resource.
A blacklist is a list of items, such as IP addresses, domain names, or specific keywords, that are denied access or services. When a network device, such as a router, is configured with a blacklist, it blocks communication or access to any item on the list. Blacklists are commonly used to block known malicious websites or spam email addresses.
Conversely, a whitelist is a list of items that are explicitly allowed. When a network device is configured with a whitelist, it only permits communication or access to items on the list, effectively blocking everything else. Whitelists can enhance security by preventing unauthorized devices or services from accessing your network.
A blacklist is a list of items, such as IP addresses, domain names, or specific keywords, that are denied access or services. When a network device, such as a router, is configured with a blacklist, it blocks communication or access to any item on the list. Blacklists are commonly used to block known malicious websites or spam email addresses.
Conversely, a whitelist is a list of items that are explicitly allowed. When a network device is configured with a whitelist, it only permits communication or access to items on the list, effectively blocking everything else. Whitelists can enhance security by preventing unauthorized devices or services from accessing your network.