Optimum tool does not appear? The Optimum Availability Tool may not appear on your computer due to possible firewall settings from your network. Please contact your IT department or your internet service provider and request to open up an OUTgoing access rule on their firewall to the IP address, TCP port number, and the URL listed below: https://srt.glpconnect.com:2044/osat/ IP address: 65.223.103.6 TCP Port: 2044