Cisco's ‘Application Centric Infrastructure' vs. SDN

Network Protocols and Security

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  • Troubleshooting proxy firewall connections

    Investigating the TCP "handshake" between clients and servers has always been a useful way to diagnose Web server and application problems. Firewalls, however, can interfere with the normal transmission control protocol process. In this tip, network ... 

  • Unified communications infrastructure threats and defense strategies

    Unified communications systems promise exciting productivity gains for workers and cost savings for businesses, but many often underestimate the security threats facing them. John Burke outlines the threats facing unified communications and how to de... 

  • smurfing

    A smurf attack is an exploitation of the Internet Protocol (IP) broadcast addressing to create a denial of service. 

  • IP spoofing (IP address forgery or a host file hijack)

    IP spoofing, also known as IP address forgery, is a hijacking technique in which the attacker masquerades as a trusted host to conceal his identity, hijack browsers, or gain access to a network. The hijacker obtains the IP address of a legitimate ho... 

  • IGP (Interior Gateway Protocol)

    An IGP (Interior Gateway Protocol) is a protocol for exchanging routing information between gateways (hosts with routers) within an autonomous network (for example, a system of corporate local area networks). 

  • 5 terms you need to know before you employ VoIP

    Learn five important terms every organization should understand before deploying Voice over IP (VoIP) telephony. 

  • McAfee launches IPS for 10g networks, but is IT ready?

    McAfee unveiled a new IPS offering for 10-gigabit Ethernet networks and announced the upgrade and integration of several other products. One analyst offers a mixed assessment. 

  • Interop: Vendors update software, demonstrate new security features

    3Com targets SMBs; Shift4 introduces gateway to wipe data; SecureWave updates software; StillSecure opens support program; and BlueCoat demonstrates mobile security tools. 

  • Admins run into trouble with Microsoft updates

    A DNS service failure and an ongoing WSUS glitch are among this month's frustrations as IT administrators try to deploy the latest security patches from Microsoft. 

  • Microsoft to release DNS patch Tuesday

    In addition to a fix for the DNS Server Service flaw, Microsoft plans to patch critical flaws in Windows, Office, Exchange, CAPICOM and BizTalk.