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Default allow

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'''Default Allow''' is a type of firewall ruleset in which the default condition of the firewall is to allow ALL connectivity - from anywhere, to anywhere.  A '''default allow''' firewall with no additional rules loaded effectively is no firewall at all.
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'''Default allow''' is a type of [[firewall]] ruleset in which the default condition of the firewall is to allow ALL connectivity - from anywhere, to anywhere.  A '''default allow''' firewall with no additional rules loaded is effectively the same thing as no firewall at all.
  
Default Allow firewalls are not recommended, because there is a [[race condition]] problem - a window of time in between a reset of the firewall to default rules and the re-loading of the extra rules to restrict access in which "anything goes."  See [[Default deny]].
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Default allow firewalls are not recommended, because there is a [[race condition]] problem - a window of time in between a reset of the firewall to default rules and the re-loading of the extra rules to restrict access in which "anything goes."  See [[Default deny]].
 
[[Category:FreeBSD Terminology]]
 
[[Category:FreeBSD Terminology]]
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[[Category:Securing FreeBSD]]

Latest revision as of 17:28, 25 August 2012

Default allow is a type of firewall ruleset in which the default condition of the firewall is to allow ALL connectivity - from anywhere, to anywhere. A default allow firewall with no additional rules loaded is effectively the same thing as no firewall at all.

Default allow firewalls are not recommended, because there is a race condition problem - a window of time in between a reset of the firewall to default rules and the re-loading of the extra rules to restrict access in which "anything goes." See Default deny.

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