By Ido Dubrawsky
Arrange for the hot CCSP CSI 642-541 examination with the single Cisco licensed CSI guidance advisor on hand * the single CCNP CSI advisor built together with Cisco platforms, supplying the main exact and present topical insurance * digital trying out engine on CD-ROM offers versatile review positive aspects and suggestions on parts for additional learn * Modular writing type and different good points from examination Certification advisor sequence offer enhanced studying, subject retention, and more advantageous examination successThis name is essentially meant for networking execs pursuing the CCSP certification and getting ready for the CSI 642-541 examination, considered one of 5 CCSP part checks. The fabrics, although, attract a good broader diversity of networking execs looking a greater realizing of the Cisco secure Blueprint. The examination and direction, often called Cisco secure Implementation (CSI), conceal a vast diversity of networking defense subject matters within the context of the final Cisco secure Blueprint that publications community managers and engineers in selecting which defense ideas might be deployed all through a given community. The secure procedure offers the basis for migrating to safe, reasonable, converged networks. It permits businesses to cost-effectively set up a modular, scalable safety framework in phases and to convey built-in community defense through high-level protection items and services.CCSP CSI examination Certification advisor (CCSP Self-Study) combines innovative insurance of safety recommendations with the entire confirmed studying and examination training positive factors of the examination Certification advisor sequence from Cisco Press. you will find a CD-ROM checking out engine with greater than two hundred questions, pre- and post-chapter quizzes, and a modular publication and CD association that breaks options into small, easy-to-absorb blocks of knowledge.
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Ensure that sessions time out when they are no longer being used. — Consider SSH or HTTS as options that are more secure than Telnet. ■ Lock down SNMP access to routers—This can be accomplished through the following means: — Use SNMP version 2 at a minimum. — Choose community string names with the same care as passwords. — Require authentication. — Restrict the IP addresses that can connect to the SNMP port on the router. ■ Use TACACS+ to control access to the router—Using an authentication, authorization, and accounting (AAA) system allows for the collection of information about user logins, user logouts, HTTP accesses, privilege-level changes, commands executed, and similar events.
Security Implementation Throughout the Infrastructure The SAFE blueprint calls for security to be implemented throughout the network. This means from the edge router all the way down to the end system. The implementation of security is done through a “defense-in-depth” approach. If an attacker bypasses one layer, he still faces other layers before he reaches critical network resources. This layered defense approach maximizes the security around critical resources such as servers, databases, and applications while minimizing the impact on network functionality and usability.
Data and voice segmentation is key. ■ Telephony devices don’t support confidentiality. ■ IP phones provide access to the data-voice segments. ■ PC-based IP phones require open access. ■ PC-based IP phones are especially susceptible to attacks. ■ Controlling the voice-to-data segment interaction is key. ■ Establishing identity is key. ■ Rogue devices pose serious threats. ■ Secure and monitor all voice servers and segments. Additional SAFE White Papers Aside from the main SAFE white papers described previously in this chapter, the Cisco SAFE architecture design group has written additional white papers that cover several topics: ■ “SAFE L2 Application Note”—Discusses Layer 2 network attacks, their impact, and how to mitigate them ■ “SAFE SQL Slammer Worm Attack Mitigation”—Covers the recent Microsoft SQL Slammer worm and various methods to mitigate its impact on a network ■ “SAFE Nimda Attack Mitigation”—Covers the Nimda worm of September/October 2001 and how to mitigate its effects and propagation through the SAFE concepts ■ “SAFE Code-Red Attack Mitigation”—Covers the July 2001 Code-Red/Code-Redv2 worms and how to mitigate their effects and propagation through the use of SAFE concepts ■ “SAFE RPC DCOM/Blaster Attack Mitigation”—Covers the August 2003 RCP DCOM/ Blaster worm and how to mitigate its effects and propagation through the use of SAFE concepts Looking Toward the Future SAFE is a continuously growing and evolving blueprint.