Smart DNS Changer contains four useful tools. DNS Changer: change DNS settings to filter or non-filter your internet connection. There are two types of DNS settings. Filtered DNS: blocks, non-family friendly websites, malwares, phishing and scam sites, protect from virus and fraudulent content. Non-Filtered DNS: allows non-family friendly websites and blocks malwares, phishing and scam sites, protect from virus and fraudulent content. Kid Shiled: with Smart DNS Changer you can define different DNS server settings (filtered or non-filtered) for each user on a computer. And when a user logged on his/her user account, defined DNS server settings automatically changes for that user. For example: assume that your computer has one administrator user account for you and one limited user account for your kids. Define non-filtered DNS for administrator account and filtered DNS (family friendly) for limited account. When administrator logged on DNS settings automatically changes to non-filtered DNS, and when limited user logged on (or switch user) DNS settings automatically cages to filtered DNS. You can also block file sharing websites by defining filtered DNS for kids account. MAC address Changer: when your internet connection blocks by a network administrator (blocks you by entering your network MAC address in blocked MAC address list on router etc.), use MAC address changer to change your network MAC address to connect to the internet or change duplicated MAC addresses on same network to connect to the internet. Proxy Changer: change proxy settings to hide your internal network information (such as internal host names and Internet Protocol (IP) addresses) from websites.