Cisco ASA Firewall Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
-
The Cisco ASA must be configured to generate traffic log entries containing information to establish when (date and time) the events occurred.
Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events leading up to an outage or attack. In order to compile an accurate risk assessment, ...Rule Medium Severity -
SRG-NET-000089-FW-000019
Group -
SRG-NET-000098-FW-000021
Group -
The Cisco ASA must be configured to use TCP when sending log records to the central audit server.
If the default UDP protocol is used for communication between the hosts and devices to the Central Log Server, then log records that do not reach the log server are not detected as a data loss. The...Rule Medium Severity -
SRG-NET-000131-FW-000025
Group -
The Cisco ASA must be configured to disable or remove unnecessary network services and functions that are not used as part of its role in the architecture.
Network devices are capable of providing a wide variety of functions (capabilities or processes) and services. Some of these functions and services are installed and enabled by default. The organiz...Rule Medium Severity -
SRG-NET-000205-FW-000040
Group -
The Cisco ASA perimeter firewall must be configured to filter traffic destined to the enclave in accordance with the specific traffic that is approved and registered in the Ports, Protocols, and Services Management (PPSM) Category Assurance List (CAL) and vulnerability assessments.
The enclave's internal network contains the servers where mission-critical data and applications reside. Malicious traffic can enter from an external boundary or originate from a compromised host i...Rule Medium Severity -
SRG-NET-000333-FW-000014
Group -
The Cisco ASA must be configured to send log data of denied traffic to a central audit server for analysis.
Without the ability to centrally manage the content captured in the traffic log entries, identification, troubleshooting, and correlation of suspicious behavior would be difficult and could lead to...Rule Medium Severity -
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
Node 2
The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.