![]() In many versions of XL, bypassing protection is as easy as selecting the entire worksheet, copying it and pasting it to a new worksheet. As a comparison, a 4-character password containing just the 26 lower case alphabet characters has 456,976 combinations, and a 3-character password consisting of lower case, upper case and the digits 0-9 will have 238,328 combinations.Īgain, it doesn't matter what your original password is, one of those 194K strings will unlock your sheet or workbook. This may seem like a lot, but it only takes a few seconds for a modern computer to try them all. The remaining character can have up to 95 possible values, leading to only 2^11 * 95 = 194,560 Effectively, any password of any length is transformed into a string of 12 characters, the first 11 of which have one of only two possible values. Instead they are hashed (mathematically transformed) into a much less secure code. The reason is that the passwords you enter (i.e., with Tools/Protect/Protect Worksheet or /Protect Workbook) are not used directly in protection. Internal XL passwords are about as useful for security as tissue paper. Note: For a discussion of File or VBA Project password protection, see here. Login the switch with default password.This site will look better if you upgrade to a browser that supports web standards. Enter the command reboot -f to reboot the switch.ġ5. Sh-2.04# bootenv OSLoadOptions "quiet quiet"ġ4. (The double quotation marks are required.) Enter the command bootenv OSLoadOptions "quiet quiet" to reset the OSLoadOptions to quiet quiet . These message may be ignored as long as the message All account passwords have been successfully set to factory default appears in response to this command.ġ3. Raslog Module Initialization failed rc=-1įabsys device open: No such device or address. On some platforms, this step during password recovery attempt via bootprom may display error messages such as: Only the default accounts and passwords remain. Enter the command /sbin/passwddefault to reset all passwords to default values.ĪTTENTION: If additional user accounts existed, they are deleted. Commit interval 5 secondsĮXT3-fs: mounted filesystem with ordered data mode.ġ2. If the previous command returns hda1, use hda2. If the mount command in the previous step returns hda2, then use hda1 in this command. Use the mount command to mount the secondary partition. Image Type: PowerPC Linux Multi-File Image (uncompressed)ġ0. Enter the command mount -o remount,rw / to remount the root partition as capable of read/write operations.ġ1. Enter the command boot with no parameters to bring up the device in single-user mode. Enter the command saveenv to save the changes.ĩ. The following example highlights the field whose value you need to note.Ĩ. Enter the command printenv to verify the change. Enter the command setenv OSLoadOptions "single" to change the OSLoadOptions setting so that the switch will boot into single-user mode.ħ. LoadIdentifiers=Fabric Operating System Fabric Operating Systemī. With the command printenv one can see the current environment options, this will show stored settings If the Boot PROM password has been set, you are prompted to enter it.Ħ. Type run flash_nfs to mount root filesystem over NFSĥ. Set_bootstatus: BS_LOAD_OS, platform_idx = 1 System RAM test using Default POST RAM Test succeeded. If the Boot Prom password is not set then continue to 4.)ģ) Enter command shell: (Opens a command shell so you can reset all system passwords.)Ĭhecking system RAM - press any key to stop test Use this feature only when directed by technical support personnel. (Generates a character string for your support provider to recover the Boot PROM password.
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