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Configuration
16
Caution
If you Add a new object, but don't fill in any parameter values, the object will remain in existence
should you navigate away. You should be careful that you don't inadvertently add incompletely setup
objects this way, as they may affect operation of the FireBrick, possibly with a detrimental effect.
If you have added an object, perhaps for the purposes of looking at what attributes can be set on it,
remember to delete the object before you navigate away -- the "Erase" button (see Figure 3.8) is used
to delete the object you are viewing.
3.4.4. Backing up / restoring the configuration
To back up / save or restore the configuration, start by clicking on the "Config" main-menu item. This will
show a page with a form to upload a configuration file (in XML) to the FB6000 - also on the page is a link
"Download/save config" that will download the current configuration in XML format.
3.5. Configuration using XML
3.5.1. Introduction to XML
An XML file is a text file (i.e. contains human-readable characters only) with formally defined structure and
content. An XML file starts with the line :-
<?xml version="1.0" encoding="UTF-8"?>
This defines the version of XML that the file complies with and the character encoding in use. The UTF-8
character coding is used everywhere by the FireBrick.
The XML file contains one or more elements, which may be nested into a hiearchy.
Note
In XML, the configuration objects are represented by elements, so the terms object and element are
used interchangeably in this manual.
Each element consists of some optional content, bounded by two tags - a start tag AND an end tag.
A start tag consists of the following sequence of characters:-
• a < character
• the element name
• optionally, a number of attributes
• a > character
An end tag consists of the following sequence of characters:-
• a < character
• a / character
• the element name
• a > character
If an element needs no content, it can be represented with a more compact self closing tag. A self closing tag
is the same as a start tag but ends with /> and then has no content or end tag.
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