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Infrastructure Security: Devices and Media • Chapter 6 417

Diskettes are also magnetic-based and allow you to store data in another
portable format. Most systems have no need for floppy disk drives with the popu-
larity of CD-ROMs, so it is not a bad idea to remove these drives from users’
workstations.This helps in preventing viruses from being introduced to the net-
work from users bringing in infected diskettes.
Flashcards are based on memory chips and are very reliable.They never wear
out if well taken care of. Many routers use flashcards for storing configuration
information, and they are also commonly used for storing pictures from digital
cameras. Encrypting the data on flashcards is a good idea and allows you to keep
your data secure.
Smart Cards are credit card-sized devices that allow administrators to store lim-
ited amounts of data.They are often used for identification or as a small data store
due to their size and low cost. Many also offer authentication capabilities by using a
built-in processor.This helps keep the personal and confidential information stored
on these cards secure.

Exam Objectives Fast Track

Device-based Security

Firewalls, routers, IDSes, and switches are devices that can all help secure a
network as long as they are properly configured.
Wireless, modems, RAS, PBXs, and VPNs all allow remote access to a
computer or telecommunications network and should be made as secure
as possible to prevent intrusion or attacks.
Network monitoring or diagnostic equipment, workstations, servers, and
mobile devices are all capable of being abused by intruders when attached
to a network, and should therefore have their communications encrypted
when possible, and be protected with strong passwords

Media-based Security

Coax, UPT, STP, and fiber are all media used to physically connect devices
to a network, and each has its own benefits and vulnerabilities.

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