Hey Guys,
What parameters would you look for if you audited a large rulebase for
an enterprise firewall? These are a few I could think of. Anything
else that you guys consistently look at when managing/auditing your
firewalls? Do take note that I'm talking just singularly about the
rule-base and not other configuration information i.e: I'm not looking
at things like -- Low console session timeout OR Telnet admin
interface open etc. I'm looking at just the rulebase this time around.
Here are my parameters:
Rules which have "any" or an equivalent keyword in them
Rules where an entire subnet has been granted access to a resource
Rules where a range of IP addresses has been granted access to a resource
Rules where a large range of ports has been opened to an IP Address / Addresses
Rules where there are design issues in the protocol itself
eg. Unencrypted traffic
Rules which are redundant and can be removed from the rulebase
Thanks
Arvind
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Received on May 19 2008
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