By Richard Deal
Richard Deal's present of constructing tricky know-how suggestions comprehensible has remained consistent. if it is featuring to a room of knowledge know-how execs or writing books, Richard's communique talents are unsurpassed. As info know-how pros we're confronted with overcoming demanding situations each day...Cisco ASA Configuration is a smart reference and gear for answering our demanding situations. --From the Foreword by way of Steve Marcinek (CCIE 7225), structures Engineer, Cisco structures A hands-on consultant to imposing Cisco ASA Configure and keep a Cisco ASA platform to satisfy the necessities of your safety coverage. Cisco ASA Configuration exhibits you the way to regulate site visitors within the company community and safeguard it from inner and exterior threats. This entire source covers the newest gains on hand in Cisco ASA model 8.0, and contains designated examples of complicated configurations and troubleshooting. enforce and deal with Cisco's strong, multifunction community adaptive safeguard equipment with support from this definitive consultant. Configure Cisco ASA utilizing the command-line interface (CLI) and Adaptive safeguard machine supervisor (ASDM)Control site visitors during the equipment with entry keep an eye on lists (ACLs) and item groupsFilter Java, ActiveX, and web pages Authenticate and authorize connections utilizing Cut-through Proxy (CTP)Use Modular coverage Framework (MPF) to configure protection equipment featuresPerform protocol and alertness inspectionEnable IPSec site-to-site and distant entry connectionsConfigure WebVPN parts for SSL VPN accessImplement complicated beneficial properties, together with the obvious firewall, protection contexts, and failoverDetect and stop community attacksPrepare and deal with the AIP-SSM and CSC-SSM playing cards
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Extra info for Cisco ASA Configuration (Networking Professional's Library)
Policy Implementation The security algorithm is responsible for implementing and enforcing your security policies. The algorithm uses a tiered hierarchy that allows you to implement multiple levels of security. To accomplish this, each interface on the appliance is assigned a security level number from 0 to 100, where 0 is the least secure and 100 is the most secure. The algorithm uses these security levels to enforce its default policies. For example, the interface connected to the public network should have the lowest security level, whereas the interface connected to the inside network should have the highest security level.
Failover Implementations This section will introduce the two failover implementations: active/standby and active/ active. Active/Standby Failover Up through version 6 of the operating system, only active/ standby failover was supported. Both hardware and stateful failover are supported in this configuration. With the active/standby failover implementation, the primary security appliance assumes the active role, and the secondary appliance assumes the standby role. When an appliance is in an active state, it forwards traffic between interfaces; this is not true of the standby unit.
When an appliance is in an active state, it forwards traffic between interfaces; this is not true of the standby unit. An appliance in a standby state only monitors the active unit, waiting for a failover to take place and then cutting over to an active role. These two roles are shown in Figure 1-7. Active/Active Failover Starting in version 7 of the operating system, Cisco added a new failover implementation called active/active failover. Both hardware and stateful failover are supported in this configuration.
Cisco ASA Configuration (Networking Professional's Library) by Richard Deal