Internet Lock is an access control and password protection software for your Internet programs, it can deny or password protect any program and connection from accessing the Internet. Internet Lock works with the "Rules" mode: you can add one or more rules to control programs and internet connections. A rule normally has such format: [Allow/Deny/Password Protect] [Program] on [Port]. Internet Lock allow you to fully control the access to the internet for each program and each port, it also supports schedule feature. For example: the most use rule [Password Protect] [Any Program] on Port  will password protect all the web browsers included Internet Explorer, Firefox, AOL etc. This is because that all the web browsers will use port 80 to access internet. Internet Lock supports to protect port range as "[Allow/Deny/Password Protect] [Program] on [Start Port] to [End Port]" since version 4.0.