More from Cisco Subnet: Cisco unveils rack server for UCS Cisco participates in first Data Center Bridging plugfest Did Cisco win big AT&T router RFP? Has EMC rustled Data Domain away from NetApp, HP and Cisco? Cisco founder wants to go faster, farther From our bloggers: Yersinia: Coolest Layer 2 Hacking Tool Jimmy Ray Purser, Networking Geek to Geek: "It's really hard to beat Layer 2 hacking to really mess stuff up. While folks are up at layer 4-7 messin' around with this socket or that scripting vuln, I am down here at layer 2 all fat, dumb and... fat. " The Dual Stack Dilemma Jeff Doyle, IP Routing: "We are entering the transitional period between IPv4 and IPv6, and things are going to get awkward for a while. I know of two very large service providers whose requests for new IPv4 allocations were, in the last couple of months, denied." Switch QoS: Classification and Marking Example Dennis Hartmann, Cisco Unified Communications: Once QoS is deployed, the next Internet work or denial of service attack can only utilize the resources that are not currently being utilized for good traffic receiving a bandwidth guarantee. Would you recommend Dynamips to a CCNA newbie? Wendell Odom's Cisco Cert Zone: For newbies, the question is, should you use Dynamips as your primary hands-on learning tool for CCNA prep? Too Many IOS Versions, Something's Gotta Give Soon Michael Morris, From the Field: "Back when I worked in network operations at AT&T, I was (strangely) proud that I knew all the different versions, feature sets, and varieties of Cisco IOS. However, now, all the different versions of IOS are making me sick." Could The Cisco Plublic Telepresence Suites be over before it got started? Larry Chaffin, Putting Realism Into Your Network: "I have been watching the Cisco Public Telepresence Site for some time now to see if anything new would come out. But since it has gone up there has been little in updates, little updates of content and new sites." Top 4 Tips to Fight Off Botnet Denial of Service Attacks Jamey Heary, Cisco Security Expert: "The shear size of today's botnets has reached into the mind-boggling realm of 1.9 million bots in a single botnet. Couple that with the fact that botnet DDoS attacks are one of the hardest assaults to defend against and you have a real nightmare scenario on your hands. " Forget Five-9s Go for 100% Scott Hogg, Core Networking and Security: "Network uptime is critical. Instead of striving for five-9s of reliability (99.999%) why not just aim for 100% availability because that is what the requirements dictate? That begs the question, how would you design a data network if the goal was to achieve 100% availability?" Hot discussions among Cisco Subnet readers: PCI Standard or Not, Encrypting Internal PCI Network Traffic is a Good Thing Fight off a botnet denial of service attack Has EMC rustled Data Domain away from NetApp, HP and Cisco? Dynamips Would You Recommend it to a New CCNA Candidate? (Survey) June Giveaways Cisco Subnet and Microsoft Subnet are giving away training from Global Knowledge to two lucky readers and 15 copies each of books on IPv6 security, the Cisco Secure Firewall Services Module, and Active Directory Domain Services 2008. Deadline for entries June 30. |
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