Cisco ASA Firewall Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-NET-000335-FW-000017
Group -
The Cisco ASA must be configured to generate a real-time alert to organization-defined personnel and/or the firewall administrator in the event communication with the central audit server is lost.
Without a real-time alert (less than a second), security personnel may be unaware of an impending failure of the audit functions and system operation may be adversely impacted. Alerts provide organ...Rule Medium Severity -
SRG-NET-000362-FW-000028
Group -
SRG-NET-000364-FW-000035
Group -
The Cisco ASA perimeter firewall must be configured to block all outbound management traffic.
The management network must still have its own subnet in order to enforce control and access boundaries provided by Layer 3 network nodes such as routers and firewalls. Management traffic between t...Rule Medium Severity -
SRG-NET-000364-FW-000036
Group -
The Cisco ASA must be configured to forward management traffic to the Network Operations Center (NOC) via an IPsec tunnel.
When the production network is managed in-band, the management network could be housed at a NOC that is located remotely at single or multiple interconnected sites. NOC interconnectivity, as well a...Rule Medium Severity -
SRG-NET-000364-FW-000040
Group -
SRG-NET-000364-FW-000041
Group -
The Cisco ASA must be configured to inspect all inbound and outbound IPv6 traffic for unknown or out-of-order extension headers.
IPv6 packets with unknown extension headers as well as out-of-order headers can create Denial-of-Service attacks for other networking components as well as host devices. IPv6 inspection can check c...Rule Medium Severity
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