A. It enables traffic filtering based on URLs.
B. It serves as an endpoint for a site-to-site VPN in standalone mode.
A firewall within an enterprise has multiple functions, including traffic filtering based on URLs (A) and serving as an endpoint for a site-to-site VPN in standalone mode (B). Firewalls help protect the network by inspecting and controlling incoming and outgoing traffic based on predetermined security rules. They can also establish secure connections between networks through VPNs.
A & B are correct
A- It enables traffic filtering based on URLs, allowing the organization to control and monitor access to websites and web-based content.
B- It serves as an endpoint for a site-to-site VPN in standalone mode, allowing secure communication between different networks or locations.
AI answers:
The statement that enterprise firewalls serve as an endpoint for a site-to-site VPN in standalone mode is **false**. Enterprise firewalls, especially Next-Generation Firewalls (NGFW), are typically integrated into a broader network security architecture and are not standalone endpoints for site-to-site VPNs. Site-to-site VPNs involve connecting two or more networks securely, such as a corporate network and a branch office network, and are established between networking equipment like routers or dedicated VPN appliances. While enterprise firewalls play a crucial role in network security by monitoring and filtering traffic, preventing unauthorized access, and protecting against cyber threats, they are not designed to function as the sole endpoint for site-to-site VPN connections. Site-to-site VPNs require dedicated VPN endpoints to establish secure communication channels between different network locations, which are distinct from the role of enterprise firewalls in network security[1][2][4].
The statement that enterprise firewalls provide support as an endpoint for a remote access VPN in multiple context mode is true. Enterprise firewalls, such as Cisco Secure Firewall, can serve as endpoints for remote access VPNs using SSL and IPsec-IKEv2 protocols. They can provide secure gateway capabilities and support remote access SSL and IPsec-IKEv2 VPNs. The full tunnel client, Secure Client, allows remote users to establish secure SSL and IPsec-IKEv2 connections to the security gateway. The Secure Client is the only client supported on endpoint devices for remote VPN connectivity to threat defense devices. This client gives remote users the benefits of an SSL or IPsec-IKEv2 VPN client without the need for network administrators to install and configure clients on remote computers.
Multiple context mode does not support the following features:
•Dynamic routing protocols
Security contexts support only static routes. You cannot enable OSPF or RIP in multiple context mode.
•VPN
•Multicast
https://www.cisco.com/c/en/us/td/docs/security/asa/asa72/configuration/guide/conf_gd/contexts.html
"Many features are supported in multiple context mode, including routing tables, firewall features, IPS, and management. Some features are not supported, including VPN and dynamic routing protocols."
https://www.cisco.com/c/en/us/td/docs/security/asa/asa84/configuration/guide/asa_84_cli_config/mode_contexts.html#92503
"From what I understand, the firewall can have Multi-Context mode, in which it is virtualized in separate instances to be used in different domains of the company. This allows independent configurations, such as URI filters, NAT, remote access VPN and even configurations site-to-site VPN separated by context (instance). In addition, the firewall in Standalone mode, which is a normal and independent firewall (not divided into virtual instances), is also capable of offering site-to-site VPN feature -site as an endpoint to another firewall or router. So option B is wrong as it mentions that the firewall offers site-to-site VPN only in Standalone mode, when in fact, in both Multi-Context and Standalone mode, it is possible to configure the firewall as an endpoint for a site-to-site VPN. The correct statement would be: 'it serves as an endpoint for a site-to-site VPN in standalone mode or in Multi-Context mode'."
Unsupported Features
Multiple context mode does not support the following features:
•Dynamic routing protocols
Security contexts support only static routes. You cannot enable OSPF or RIP in multiple context mode.
•VPN
•Multicast
https://www.cisco.com/c/en/us/td/docs/security/asa/asa72/configuration/guide/conf_gd/contexts.html
A. Traffic Filtering based on URLs: A firewall can be configured to filter network traffic based on Uniform Resource Locators (URLs) or website addresses. This feature allows organizations to enforce web access policies by blocking or allowing specific URLs or categories of websites.
B. Endpoint for Site-to-Site VPN in Standalone Mode: A firewall can act as an endpoint for a site-to-site Virtual Private Network (VPN) connection. In this mode, the firewall establishes secure communication tunnels between different locations or networks, ensuring the confidentiality and integrity of data transmitted over the VPN.
I think C is also correct:
"This document describes how to configure Remote Access (RA) Virtual Private Network (VPN) on Cisco Adaptive Security Appliance (ASA) firewall in Multiple Context (MC) mode using the CLI. It shows the Cisco ASA in multiple context mode supported/unsupported features and licensing requirement with respect to RA VPN."
https://www.cisco.com/c/en/us/support/docs/security/asa-5500-x-series-firewalls/200353-ASA-Multi-Context-Mode-Remote-Access-A.html
i guess it is A and C,
functions of firewall
Controlling and blocking access. Firewalls can be used for controlling and blocking access to certain websites and online services to prevent unauthorized use. For example, an organization can use a firewall to block access to objectionable websites to ensure employees comply with company policies when browsing the internet.
Secure remote access. Firewalls can be used to grant secure remote access to a network through a virtual private network (VPN) or other secure remote access technology.
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