The original settings may have been made using MacTCP Admin, which is available only with the product, TCP/IP Administration for Macintosh. When MacTCP Admin is used to configure the IP address and other settings, these settings cannot be altered using the MacTCP control panel. As an additional option, the administrator may also password-protect an individual's settings, which would require this password even if MacTCP Admin is used.
The reason for this security is because in most large IP environments addresses are assigned to individuals. Altering an IP address, may disrupt another user's access, or render the user's workstation incapable of communicating with the network.
If security is not an issue, a user should first verify, with the network administrator, that he or she has a list of the proper settings (IP address, Routing Information, Domain Name Server and address), and a copy of the MacTCP control panel that has never been configured. Then move from the System Folder or delete ALL of the MacTCP, MacTCP DNR, and MacTCP Prep files from the hard drive, restart, and then re-install and reconfigure the MacTCP control panel.
System 7.5 users may use the System 7.5 Installer by selecting Custom Install from the pop-up menu, selecting Control Panels, and then click MacTCP to install only the MacTCP control panel. Other users will obtain a fresh copy of the MacTCP control panel from their network administrator if site-licensed, or from the master disks of the product they purchased which included MacTCP.
Support Information Services