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CCNA Security Exam Cram (Exam IINS 640-553) by Eric Stewart

By Eric Stewart

  during this publication you’ll easy methods to: construct a safe community utilizing safety controls safe community perimeters enforce safe administration and harden routers enforce community safeguard guidelines utilizing Cisco IOS firewalls comprehend cryptographic prone set up IPsec digital inner most networks (VPNs) safe networks with Cisco IOS® IPS defend swap infrastructures safe endpoint units, garage region networks (SANs), and voice networks   WRITTEN by means of a number one professional: Eric Stewart is a self-employed community defense contractor who unearths his domestic in Ottawa, Canada. Eric has greater than two decades of expertise within the info expertise box, the final 12 years focusing totally on Cisco® routers, switches, VPN concentrators, and defense home equipment. nearly all of Eric’s consulting paintings has been within the implementation of significant safeguard infrastructure tasks and architectural studies with the Canadian Federal govt. Eric is a qualified Cisco teacher instructing Cisco CCNA, CCNP®, and CCSP® curriculum to scholars all through North the US and the realm.   CD positive factors MeasureUp perform Questions! This publication incorporates a CD-ROM that includes: perform checks with whole insurance of CCNA® protection examination themes targeted factors of right and improper solutions a number of examination modes Flash Card layout An digital reproduction of the booklet   informit.com/examcram ISBN-13: 978-0-7897-3800-4 ISBN-10: 0-7897-3800-7   U.S. $39.99 CAN. $43.99 internet U.K. ?25.99  

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Sample text

Password Attacks. This is any attack that is geared toward making a system divulge its password database. Viruses, trojans, keyloggers, protocol analyzers (sniffers), and brute force attacks are common vectors. Application protocols such as Telnet and FTP that use cleartext passwords are the most vulnerable to the use of protocol analyzers. Even protocols like NTLM (Windows NT LAN Manager) and Active Directory, which exchange hashes of passwords vs. cleartext passwords, are vulnerable to offline, brute force tools such as John the Ripper.

Ethics Sometimes we are motivated to do something, not because we will be punished if we don’t do it, but because we know it’s the right thing to do. This is why ethics are considered to be moral principles and a higher standard than the law. These codes of ethics are as follows: . Moral principles that constitute a higher standard (or “code”) than the law. Guides for the conduct of individuals or groups. Supported by a number of organizations in the INFOSEC field: . ) Code of Ethics . Computer Ethics Institute .

Ensuring that only authorized entities can change sensitive data. May also guarantee origin authentication (see the following note), meaning an assurance that the data originated from an authorized entity (like an individual). Availability. Ensuring that systems and the data that they provide access to remain available for authorized users. NOTE Origin authentication is often overlooked in designing network security architecture. In some texts, this is the “A” in CIA. A security professional must constantly weigh the tradeoffs between threats, their likelihood, the costs to implement security countermeasures, and cost versus benefit.

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