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ccna certification average salary.9.4 SummaryThe Adaptive Security Appliance (ASA) is a standalone firewall appliance that is a key component of Cisco SecureX technology. It protects the internal network from unauthorized external access by integrating firewall, VPN concentrator, and intrusion prevention features into a single appliance. The ASA also supports many advanced features, such as virtualization, high availability with failover, identity firewall, and advanced threat control. ASA can be configured in routed mode or transparent mode.The ASA assigns security levels to the internal and external networks to differentiate between them. A security level defines the trust level of an interface; the higher the level, the more the interface is trusted. The range of security level values is 0 (untrusted).100 (very trusted). Each running interface must have a name and must have a security level assigned from 0 (lowest).100 (highest).ASA devices can be configured and managed using the CLI or ASDMGUI. ASACLI is a proprietary OS that looks similar to a router IOS. The ASA comes with a default configuration that is sufficient for SOHO deployments, which includes.Two pre-configured VLAN networks.DHCP enabled for internal hosts.NATo for external accessCiscoASDM facilitates the installation, configuration, monitoring, and troubleshooting of CiscoASA. ASDM provides several wizards to simplify configuration. StartupWizard takes administrators through the initial configuration of the ASA. The VPN Wizard allows administrators to configure basic site-to-site VPNs and remote access VPNs. o ASDM also provides the High Availability and Scalability Wizard, the UnifiedCommunicationWizard, and the PacketCaptureWizard. PacketCaptureWizard9.4 Summary 293The ASA provides objects and object groups that can be used to easily maintain configurations. The ASA provides basic traffic filtering using ACLs. It supports NAT and PAT,which can be static and dynamic. ASA can be configured to use a local user database or an external server for authentication. The ASA uses MPF to define a set of rules to apply firewall features.