Guide to Firewalls and VPNs | Products | EbooksGreg Holden is the author of more than 35 books on Internet- and computer-related topics, including the Web design applications Microsoft FrontPage and Macromedia Dreamweaver. He also does Web development for the design firm NewCor Group. He helped design recruitment literature and course catalogs for the University of Chicago. He lives in Chicago with his two teenage daughters and assorted birds, fish, and other pets. Herbert Mattord, Ph. Mattord is an active researcher and author in Information Security Management and related topics.
Cisco ASA 5505 Firewall Initial Setup: Cisco ASA Training 101
Guide To Firewalls & Network Security: With Intrusion Detection And VPNs 2nd Edition
A virtual private network VPN consists of multiple remote peers transmitting private data securely to one another over an unsecured network, such as the Internet. Site-to-site VPNs use tunnels to encapsulate data packets within normal IP packets for forwarding over IP-based networks, using encryption to ensure privacy and authentication to ensure integrity of data. An IPsec policy is a set of parameters that define the characteristics of the site-to-site VPN, such as the security protocols and algorithms that will be used to secure traffic in an IPsec tunnel. Several policy types might be required to define a full configuration image that can be assigned to a VPN topology, depending on the IPsec technology type. You can also configure shared policies in Policy view and view and configure topologies in Device view.
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Log in. Firewalls are among the best-known network security tools in use today, and their critical role in information security continues to grow. However, firewalls are most effective when backed by thoughtful security planning, well-designed security policies, and integrated support from anti-virus software, intrusion detection systems, and related tools.
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