D-Link DFL-2500 User Guide - Page 35
day. An insurmountable problem may arise when the web server needs
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16 Chapter 3. Firewall Principles Rather, the problem is that insecure machines can execute commands on "protected" machines. Another form of protection worth considering is to set up a separate data source that contains limited information to which the web server has access. It should only contain information deemed sufficiently insensitive to be accessed from the web server. This process requires an automatic export of data from the internal data source to the external data source, to be executed when information needs to be updated, or at fixed times of the day. An insurmountable problem may arise when the web server needs to update the data source. The best way of tackling such a problem is to move the affected data source to a separate network segment, thereby decreasing the potential damage in the case of intrusion. D-Link Firewalls User's Guide
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