Central Site Remote Access Switch 13BASICSChange Defaults to Secure System• ADMIN has READ/WRITE access to OTHER files• Exit MANAGE MODE by typingexit .3. If you are upgrading to Release 7.2 software, perform the following:• Using the TFTP client on the remote workstation, TFTP PKUNZIP.EXE to the \admin di-rectory of the CyberSWITCH to be upgraded.• TFTP RUGRADE.BAT to the \ (root) directory.• TFTP AUTOEXEC.BAT to the \ (root) directory.If you are upgrading from Release 7.2 to a later release, skip this step. (These files are alreadyincluded in 7.2 software).4. Using the TFTP client on the remote workstation, TFTP UPGRADE.OSW to the \ (root)directory of the CyberSWITCH to be upgraded.Notes: If you experience a transmission timeout, check the retransmission setting on the TFTPpackage. A retransmission rate of 10 seconds is usually sufficient; values less than thatmay not work properly.If you experience a problem transferring the file with TFTP, wait about three minutesfor the TFTP to fail, delete the incomplete file, and try again.5. Telnet to the CyberSWITCH and issue therestart command.HANDLING U PGRADE WARNINGS AND ERRORSDuring Step 5 of the Upgrade process, checks are made to ensure that the system is in a “normal”condition before an upgrade. If something abnormal is found, you will be warned of theabnormality and the upgrade process is halted. In the event that you receive any of the followingerror messages, contact Customer Support for assistance.Possible errors:Invalid OLD System file.You can only upgrade from release: n.n.n.Machine running release: n.n.n.Could not open old System file.Cannot run upgrade.C HANGE D EFAULTS TO SECURE S YSTEMThe system is preconfigured with defaults that were designed to make it possible to have yoursystem up and running quickly. After your machine is functioning properly, some of these defaultsshould be changed to make your system more secure. The following configuration changes areneeded to provide this security:1. Either delete User1 and User2 or change their names and secrets.Use Dynamic Management’s manage mode to carry out either of these functions. To enter themanage mode, typemanage at the system prompt. If you have no need for these types of