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Computerized Networking of HIV Providers Networking Fundamentals

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Computerized Networking of HIV Providers Networking Fundamentals. Presented by: Tom Lang – LCG Technologies Corp. May 8, 2003. Agenda. Network Infrastructure (“plumbing”) VPN & the “Internet” Network Resources Putting IT all together Application Architecture Networking & HIPAA

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slide1
Computerized Networking of HIV Providers

Networking Fundamentals

Presented by:

Tom Lang – LCG Technologies Corp.

May 8, 2003

slide2
Agenda
  • Network Infrastructure (“plumbing”)
  • VPN & the “Internet”
  • Network Resources
  • Putting IT all together
  • Application Architecture
  • Networking & HIPAA
  • Support Requirements
  • Lots of Questions & Some Answers
slide3
What is a Computer Network?
  • Share computer resources – consists of two major sets of components:
    • “Plumbing” – roads, traffic lights and signs
    • Resources – restaurants, gas stations and hotels

LAN – Local Area Network (one domain / office)

WAN – Wide Area Network (more than one domain / segment / office)

slide4
The “Plumbing” of a Network?
  • Cabling – physical connection that ties together all of the resources (roads / highways)
  • Hubs / Switches – manage the communication traffic within one “network domain / segment / office” to make sure traffic “continues to move” (side street & city traffic lights and signs)
  • Routers – manage the communication traffic between “network domains / segments / offices” to make sure traffic “continues to move” (on / off ramp traffic lights and signs)
slide5
Cabling

Manufactured to handle certain levels / speeds of traffic (alley, 2 lane street, 4 lane highway)

  • Category 3 – “old” phone cabling
  • Category 5 – “old” data standard, up to 100 MB and less than 300 feet
  • Category 5e – “current” data standard, up to 100 MB and less than 328 feet / up to 1 GB and less than 290 feet
  • Category 6 – “new” data standard, up to 10 GB and longer runs
slide6
Hubs / Switches

Which is better / faster?

  • Hubs – provide a “shared” environment (one traffic light at an intersection of 4 lanes):

10 ports that share 100 MB each port will get 10 MB

  • 10 ports each will get their own 100 MB
  • Switches – provide a “switched” environment (visualize “stacking” of four lanes on top of each other, each with their own traffic light):
slide8
Virtual Private Network – what is it?
  • A private network (your LAN) that
    • uses a public network (the Internet)
    • to share resources
  • Most common approach – VPN client
    • software on your home computer / laptop
    • that connects to your office firewall device
  • Allows you to gain access to the same computer resources from home / remote location that you would have as if you were sitting in your office
slide10
The Internet – what is it?
  • Largest network of computer resources available
  • Every resource has a mailing address (IP address: 192.168.1.1)
  • Numbers too hard to remember – use English names (LCGTech.com = 63.85.252.55)
  • Servers (domain name) provide the
    • lookup of names to IP addresses all
    • over the world so that traffic is routed
    • to the correct “physical” server
slide11
Network Resources
  • Firewall (protection device between an internal “safe” network domain and an “untrusted” or “unsafe” network domain – Internet)
  • Server (high-end computer – file sharing, application, database, web, e-mail, network security access, backup responsibilities, logging and auditing, etc.)
  • Printer (standalone, directly on the
    • network, connected to a server or
    • workstation and “shared” for other
    • computers to use)
slide12
Firewall Specifications
  • Separate hardware device (versus software only)
  • License for number of “nodes” or computers
    • behind the firewall that need access through
    • the firewall
  • Virtual private network (VPN) capability
  • Filtering capability – allows you to turn off access to certain Internet resources (websites, etc.) for each internal computer / node
  • Anti-virus capability (can scan the traffic as it goes through your firewall, before it gets to your computer)
slide13
Servers (types)
  • Primary functions in a small network (“file server”)
  • File, small application, print, security and backup
  • If needed, other dedicated functions include:
  • Application (accounting, etc.)
  • Database (SQL Server, Oracle, etc.)
  • Web & E-mail (more cost effective to
    • look to a hosting company for these
    • services)
slide14
Server Definitions
  • CPU – central processing unit, brains of the computer
  • OS – operating system, provides the interface between us and the computer / server components
  • RAID – Redundant Array of Independent Disks, provides redundancy levels (0  5) for hard drive configurations (mirrored to data striping)
  • IDE/ATA – integrated drive electronics / AT Attachment, less expensive and allows up to 100 MB / second transfer rates (workstation drives)
  • UltraSCSI – Ultra fast small computer systems interface, more expensive and allows up to 320+ MB / second transfer rates (server data drives)
slide15
Server Specifications (minimum preferred)
  • CPU – the faster the better
    • (XEON – server, Pentium4
    • – workstation)
  • Memory – we all would like more
    • (minimum 512 MB)
  • OS – Microsoft Windows 2000 Server
  • Hard drives – two types preferred
    • Boot drives for the OS (two – IDE, RAID 1)
    • Data drives (UltraSCSI, RAID 1 or 5)
  • Tape drive – required for backing up data, design a tape rotation scheme for catastrophic failure or accidental failures
  • Redundancies – power supplies, network cards, etc.
slide17
Application Architecture (Types)

Standalone Application

Networked Application

slide23
Networking & HIPAA Security (2 years out)
  • Physical: building, data, workstation use,
    • security awareness, data disposal,
    • equipment control, facility, etc.
  • Technical: audit controls, role-based &
    • user-based access, transaction security,
    • data and system integrity, encryption, authentication, data backup plan, disaster recovery plan, testing, etc.
  • Administrative: Policies, procedures, training, security management, personnel security, contingency planning, chain of trust partner agreements, emergency operations, etc.
slide24
Support Requirements
  • Break / Fix & Basic Setup
    • (PCs, printers, Windows –
    • A+ Certified)
  • Server Systems Configuration
    • (firewall, server, database, web
    • hosting – MCSE, MCBDA,
    • firewall trained, MCP-I / MCSE-I)
  • Business Applications (Specialized skills / knowledge for CAREWare, accounting, etc. – direct from vendor)
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