Read this paper to learn the history and current application of RS-232, a standard that refers to two classes of devices: Data Terminal Equipment and Data Circuit Terminating Equipment. 

MPLS is a foundational technology that allows service providers and enterprise architects to offer state-of-the art networking to their customers. 

For small and medium-sized businesses (SMBs), networks can do more than simply connect machines. They also deliver voice (telephone) and video, and connect functions such as sales and bookkeeping to make business more efficient, collaborative, and profitable. Read this paper learn about core network components and benefits. 

In this webcast, discover a new aggregation services router with the equivalent capacity of 160 standard routers. Discover how to leverage this technology to improve performance, reduce bandwidth consumption, reduce expenses and much more. 

In this white paper, we'll take a look at access control lists, often referred to as access lists or ACLs (sometimes pronounced "ackels"). 

Download this interactive webinar that shows how to use Eclipse tooling and open source integration SOA tools to integrate enterprise systems and applications. 

Vyatta delivers the features, performance, and reliability of an enterprise-class secure router with the added benefits of flexible deployment options, freedom to integrate applications, and the economic advantages of commodity hardware and components. Read this manual to learn more about the Vyatta system and how easy it is to try it out. 

As services shift to IP protocols and bandwidth demands grow, Wireline Telcos and Cable MSOs alike must evolve their infrastructures to become IP centric. Read this whitepaper to learn more about the two paths service providers are taking to get to this new infrastructure and how they both end up in the same place. 

One of the most challenging topics for many CCNA candidates is subnet masking. This white paper will de-mystify the math behind subnetting, and provide examples of shortcuts that bypass the need for binary when doing calculations involving subnet masks. 

This paper explains the need to select Cisco IP Phones, switches, routers for your home lab and explores how to configure the options of VMware so that you can load Cisco Call Manager and Cisco Unity virtual machines in a lab environment. 

Check out this paper to learn about McAfee Change Control, an operational-friendly, low-touch and low overhead software that can be deployed on a wide range of hardware platforms. McAfee Change Control provides change control on servers, network devices (including switches, routers and firewalls), and databases. 

Learn how Lumension Vulnerability Management enables organizations to mitigate their critical risk by integrating the five phases of vulnerability management: discovering assets, assessing vulnerabilities and misconfigurations, prioritizing risks, remediating vulnerabilities and continuous reporting.