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ICS Solutions, Inc.
Network consulting services based in Dundee, IL.
http://www.icss.com/

iMedia Technology, Inc.
Vendor independent Internet and network-consulting. Serving southeastern MA, Cape Cod and the Islands.
http://imediatech.com/

Incognito Software Inc.
Providing DNS, DHCP, TFTP, ToD and IP management solutions for enterprises, hosting providers, and broadband service providers.
http://www.incognito.com/

InfoMax Consulting Services Inc.
Details on system integration, network implementation, site design, and web application development services.
http://www.e-infomax.com/

Integrated Technical Services
Provides expertise in the design, deployment and support of complex computing environments. Specializes in routing, LAN, WAN, Internet, Intranet, and UNIX environments.
http://www.itsco.com/

Intercon Systems
Network integration and consulting company providing details on solutions to customers in the Asia Pacific region.
http://www.interconsys.com/

InterLAN Consulting Inc.
A vendor-independent internetworking consulting firm, specializing in Internet security (firewall, VPN and PKI) and design and implementation of enterprise LAN and WAN networks.
http://www.interlanconsulting.com/

International Network Services
Offer a full range of consulting services and business solutions. End-to-end network consulting solutions address needs in Next Generation Networking, security, and network and systems management.
http://www.ins.com/

Internet Bandwidth Development
design and development of internet infrastructure.
http://www.ibd.com/

Internetworking Strategies Ltd
Network security consultants providing advice on security policy, strategy and design. Also provides implementation and support.
http://www.insl.co.uk/

Issi Network Services
Provides system installation and technical support for software, hardware, maintenance, LAN/WAN, Internet/Intranet consulting and development.
http://www.issinetwork.com/