Internet Access Scheduler - Version 2.0 Internet Access Scheduler (IAS) is a firewall that offers user-level access controls for Windows 9x/Me. IAS enhances the standard Windows access management and once installed, administrators can assign permissions to TCP/IP connections. Internet Access Scheduler lets you control which users can access what TCP/IP based protocols (HTTP, FTP, SMTP, POP3, Telnet, etc.) on a local computer, depending on the time of day and day of the week.