CISSP Exam Note (Telecommunications and Networking Security Domain) – Data Networking Technologies

March 29, 2010 · Posted in Don's eBook Report, InfoSec Docs, Information Security, Information Systems, Information Technology, Internet Docs, eBooks, etc... · Comment 

LAN Cabling Types

Twisted Pair Cable

  • Relatively slow speed
  • Two insulated wires can be shielded (STP0 or unshielded (UTP)
  • UTP is four-pair medium and comes in several categories
  • UTP can be easily tapped by eavesdroppers than the other cable types
  • Category based on how tightly wound the wires are, the tighter the wind the higher the rating and the higher the resistance to interference
  • Cat 1 UTP – was used for telephone lines, not good for data
  • Cat 2 UTP – up to 4 MBps
  • Cat 3 UTP – Used for 10BaseT networks up to 10 MBps
  • Cat 4 UTP – Used in Token Ring Networks up to 16 MBps
  • Cat 5 – Current UTP standard for new installations up to 100MBps
  • Cat 6 UTP – up to 155MBps
  • Cat 7 UTP – up to 1 GBps

You may also want to consider these CISSP resources from Amazon.com

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CISSP Exam Note (Domain 2: Telecommunications and Networking Security) – Network Address Translation

March 15, 2010 · Posted in Don's eBook Report, IT Docs, InfoSec Docs, Information Security, Information Technology · Comment 

NAT – Network Address Translation

  • 3 Private IP Address Ranges
  • Global Non-routable Addresses
  • Class A – 10.0.0.0 to 10.255.255.255
  • Class B – 172.16.0.0 to 172.31.255.255
  • Class C – 192.168.0.0 to 192.168.255.255 Read more

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  • RSS From the National Vulnerability Database

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