Hello at@ps
NGFW, FTD, and ASA are all Cisco security solutions with slightly different feature sets and capabilities.
NGFW is a firewall solution that includes traditional firewall functionality along with additional security features such as Intrusion Prevention System (IPS), Application Visibility and Control (AVC), and URL Filtering. NGFWs are typically deployed at the network perimeter to protect against external threats.
FTD (Firepower Threat Defense) is a software image that can be installed on various Cisco security appliances, including the Adaptive Security Appliance (ASA) and Firepower hardware appliances. FTD includes NGFW features along with advanced threat detection and remediation capabilities such as File/Malware Detection, Network Analysis, and Endpoint Protection. FTD is designed to protect against both internal and external threats and is commonly deployed in data centers, campus networks, and branch offices.
ASA (Adaptive Security Appliance) is a traditional firewall solution that provides network security at the perimeter. ASAs have been replaced by FTD as the recommended security solution for most deployment scenarios, but they are still available and supported by Cisco.
NGFWs and ASAs have different hardware models, which can affect their performance and scalability. Additionally, NGFWs use a different operating system than ASAs, which may impact their feature sets and configurations.
Regarding your questions:
1-You can differentiate between these solutions by understanding their feature sets and capabilities. NGFWs offer basic firewall functionality along with additional security features, while FTD includes advanced threat detection and remediation capabilities. ASA is a traditional firewall solution that provides network security at the perimeter.
2-NGFWs with certain images or licenses may offer some FTD features, but not all. It depends on the specific NGFW model and image or license loaded. Some NGFW models can be converted to FTD by loading the appropriate software image.
3-The differences between NGFW images typically relate to the additional security features included, such as IPS, AVC, and URL Filtering. Different images may also support different hardware models and deployment scenarios.
4-ASAs cannot grant FTD features, but some ASA models can be upgraded to run FTD software.
5-Licensing can affect the functionality of a firewall solution. For example, a license may limit the number of users or devices that can be protected by the firewall, or it may enable certain security features such as IPS or URL Filtering. Licensing can also affect the level of support provided by the vendor. It is important to carefully review the license terms and conditions to ensure that the firewall solution meets your needs.
Best regards
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