Cisco Internet and Intranet Solutions

Small- and medium-sized companies seeking to remain competitive must leverage the Internet as a business asset. From simple electronic mail to marketing and customer service information, the Internet is changing the way everyone does business. Cisco solutions support a variety of Internet and intranet applications.

Internet Access

At its most basic, Internet access is the process of connecting a private local-area network to the Internet. Most small- and medium-sized businesses rely upon an Internet service provider (ISP) to provide technical expertise to set up and manage an Internet access point. Small and medium-sized businesses require an access router to link their Ethernet or Token Ring LANs to ISP sites via dialup or dedicated WAN lines.


An intranet is a private communications network based on TCP/IP and Web technologies, and it resembles a private version of the Internet. Intranets can span a single network segment, a building, or all offices of a company. Familiar, easy-to-use Web browsers act as interfaces to existing network applications and databases. Users no longer have to know where a server is located or how to connect to it. Older, powerful mainframe or client/server applications are easier to use with simplified Web interfaces.

Internet Marketing

Internet marketing uses World Wide Web sites and other means (such as e-mail and File Transfer Protocol [FTP] sites) to market companies. The Internet has been called the great equalizer between giant corporations and small businesses. With Internet marketing, customers do not know how small or large a company is because Web sites focus on the product or service. Web sites can also help small- and medium-sized businesses build stronger customer and partner relationships by providing easy access to company information from anywhere and at any time.

Extranets and Electronic Commerce

Extranets are an extension of a company network or a collaborative Internet connection to key customers, suppliers, and partners. Extranets use private WAN lines or virtual private networks (VPNs) to provide access to specific company information and to build closer business relationships. VPNs use the Internet to create secure pathways between a company and its extranet partners. VPNs provide the same types of network services you expect in your private network, but they do it over the Internet, thus saving money. A typical extranet solution requires a router at each end, a firewall, authentication software, a server, and a dedicated WAN line or VPN over the Internet.

Electronic commerce is the act of purchasing goods and services online and requires the electronic exchange of funds, usually by credit card. E-commerce can build customer satisfaction by receiving orders and fulfilling them more quickly, with less hassle and greater accuracy. E-commerce applications require a commerce application deployed on a Web site, an access router, a firewall, and a full-time Internet connection.


What most concerns customers about any Internet solution is security. Good security solutions reduce costs, enable new applications and services, and make the Internet a low-cost, ubiquitous access media. Cisco offers a comprehensive security solution through Cisco IOS software and dedicated firewall appliances that enable customers to securely take advantage of the Internet.

Internet and Intranet Customer Needs

Customers in need of integrated Internet solutions are taking these actions:

• Seeking ways to provide excellent and timely service and information to a customer and prospect base that is increasing exponentially

• Facing the challenge of keeping pace with the demands and costs of integrating multiple systems and tools from different vendors

• Facing increasing complexity with the rapid growth in new technology and products

• Seeking to ensure that the security of company data and applications is not compromised, while allowing access to its information resources as well as its network path

Internet and Intranet Considerations

This section covers Internet and intranet considerations.


Internet access solutions should provide features such as these:

• User authentication

• Dynamic access control

• Data encryption

• NAT to prevent unauthorized use and access of network resources

• Firewall solutions, available as separate components or integrated into router software

WAN Optimization

An Internet access solution that optimizes bandwidth and reduces WAN costs is accomplished using features such as these:

• Bandwidth-on-demand

• Dial-on-demand routing

• Snapshot routing

• Protocol spoofing

• Compression


Scalability is a key requirement so that, as a company grows, it can leverage its investment in existing equipment.

For Web hosting applications, it is critical that the solution be scalable to accommodate increased traffic quickly, easily, and cost-effectively.

Guide to Internet and Intranet Solutions

Figure E-3 shows Cisco Internet and intranet solutions.

Figure E-3 Cisco Internet and Intranet Solutions

Multiple PCs onD Ethernet LAN

Cisco 2514, 1605, or^ Cisco 3600 Series


E-Mail CiscoD MicroD Webserver

Cisco Centri™D Firewall

Cisco Centri™D Firewall

Cisco 2514, 1605, or^ Cisco 3600 Series

E-Mail CiscoD MicroD Webserver

CiscoWorksD Windows

Cisco 1600^ Series with^ Cisco IOS Firewall^ -Feature Set

CiscoWorksD Windows

Cisco 1600^ Series with^ Cisco IOS Firewall^ -Feature Set

Cisco Central Site, Branch Office, and Home Office Internet Connectivity Solutions

Cisco offers a range of central site, branch office, and home office solutions that provide access to the Internet.

The Cisco 3600 series multiservice access servers/routers offer a modular solution for dialup connectivity over asynchronous, synchronous, and ISDN lines. They offer industry-leading price-for-performance value.

The Cisco 2500 series access routers are the world's most popular line of branch office routers. There is a broad range of models from which to choose to provide a wide variety of connectivity options, level of technology integration, and price points.

The Cisco 1600 series access routers represent inexpensive, easy-to-use, multiprotocol routers ideal for Internet access from small branch offices or professional offices.

The Cisco 1605-R and 2514 access routers offer a dual-LAN architecture ideal for Internet access, network segmentation, and firewall applications.

The Cisco 700 series provides easy-to-use ISDN routers for telecommuters.

All Cisco access routers incorporate the industry-leading Cisco IOS software. Cisco IOS software supports robust multiprotocol routing and provides enhanced support for multimedia and features, to reduce WAN connection costs.

Data compression and multiple traffic prioritization techniques ensure that critical data is accommodated. Dialup costs are minimized with features such as protocol spoofing, snapshot routing, NSLP route aggregation, DDR, and BOD. Comprehensive authentication and authorization allow only approved traffic onto the network; event logging, audit trails, encryption, virtual private networking functions, and NAT provide additional network security. Support for protocols such as IGMP and RSVP makes the Cisco routers ideally suited to meet the demanding needs of audio and video services.

Cisco Security Solutions

Cisco offers a range of security solutions. The Cisco Centri Firewall provides a strong security solution that is tightly integrated with Windows NT and that is easy to set up and administer. It features the following:

• Easy-to-use graphical policy builder for designing security policies

• High-performance kernel proxy for scalability

• Capability to run third-party server applications such as Web, Domain Name System (DNS), and e-mail servers securely on the firewall system

The Cisco IOS Firewall feature set extends Cisco IOS security features. It offers the following:

• Context-Based Access Control (CBAC)

• Support for a rich set of applications, such as standard TCP and UDP applications and multimedia applications, including H.323, CUSeeMe, and VDO Live

• Audit trails and real-time alerts

• Java blocking

The Cisco PIX Firewall, a dedicated firewall appliance, is suited for medium-sized businesses with high-performance site requirements. It offers the following:

• An enterprise-class integrated hardware and software firewall

• Rich application support

• Virtual private network capabilities

Cisco Internet Marketing Solutions

Cisco also offers a range of solutions to address Internet marketing. The Cisco Micro Webserver is a versatile Web server appliance that is easy to install and also cost-effective. It can be used for entry-level World Wide Web hosting, to set up a corporate workgroup intranet, or as a documentation server. It features the following:

• A standalone or stackable Web hosting and publishing solution

• A Java-based configuration utility and network wizard for easy setup

• CGI support for forms data interaction and exchange and TCI scripting on the server.

Cisco LocalDirector provides an integrated solution for load balancing TCP/IP traffic across multiple servers, such as database applications, intranet, or TN3270 mainframe services. It offers the following:

• A redundant fault-tolerant server system ideal for mission-critical applications

• Simple setup, with little disruption to network configuration

• Increased network uptime by providing high availability architecture

Cisco Management Solutions for Internet/Intranet Connectivity

All Cisco access routers are manageable by CiscoWorks Windows software, a comprehensive, Windows-based network management system with these characteristics:

• Based on the SNMP industry standard

• A powerful set of network management tools for easily managing Cisco products

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