6-2
Note that:
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An application file with the attribute of M, B, or S can be used for system startup, but one with an
attribute of N/A (that is, an application file without a specific attribute assigned to it) cannot.
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You can modify the names of application files at the CLI after the application program is started.
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You can modify the attributes of application files on the BootWare menu or the CLI after the
application program is started. Because the secure application file is the last resort for system boot,
you cannot change its attribute or turn another type of application file into a secure application file
by means of attribute modification. You can only download it on the BootWare menu.
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An application file can have different attributes assigned, but only one file of the same type (M, B, or
S) can exist in the CF card at a time. For instance, if a file in the CF card has both M and B attributes,
no other file with the attribute of M or B can exist in the CF card. If the attribute of another file is
changed from N/A to B, the existing file that has both M and B attributes will lose its B attribute.
Configuration Files
The configuration files are used to store the configuration information of the firewall and load the
configuration information at system boot.
1) A system that supports the main and backup attributes of configuration files defines three types of
configuration files by default:
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Main configuration file (with the attribute of M)
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Backup configuration file (with the attribute of B)
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Secure configuration file (with the attribute of S)
The main and backup configuration files are mainly used as follows:
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When the main configuration file is damaged or lost, the backup configuration file is used to load
the configuration information. This double protection mechanism enhances the security and
reliability of the file system.
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When saving the current configuration file, you can specify its attribute as main or backup. If no
attribute is specified, N/A is used for the configuration file.
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You can select to delete the main or backup configuration file. For a configuration file with both M
and B attributes, you can select to remove its M or B attribute.
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You can define a configuration file as the one to be used at the next boot by changing its attribute to
M.
The secure configuration file is used when the system fails to boot using the main, and then the backup
configuration file.
2) A system that does not support the main and backup attributes of configuration files define only one
type of configuration file, denoted by N/A.
The configuration files have a file name extension of .cfg.
By default, they are written into the built-in CF card before delivery.
You can configure the system to support the main and backup attributes of configuration files as needed.
However, after doing that, you cannot restore the single type configuration file mode.
The system will select a configuration file as follows:
1) If the system supports the main and backup attributes of configuration files, the system:
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Uses the main configuration file to initialize the configuration if the main file exists.
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Uses the backup configuration file to initialize the configuration if the main file does not exist.
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Uses default settings for initialization if the backup file does not exist either.
2) If the system does not support the main and backup attributes of configuration files, the system:
