Network strategies, standards and protocols Network security

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21 Νοε 2013 (πριν από 3 χρόνια και 7 μήνες)

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1

Network strategies, standards and protocols


Network security

(Read Pages 264
-
267 on 'Network user interface' and 'Network
security')

1.

Complete the table of security risks, solutions and related issues...


Risk

Solution(s)

Related issues

Unauthorised use o
f floppy
disk drive






Casual prying of work
displayed on a colleague's
monitor






Unauthorised access to a
person's user area






Pet's name used for
password
-

too obvious






Staff unable to legitimately
share files with colleagues
resulting i
n loss of
productivity



A virus spreading through a
LAN






Staff installing games on the
LAN which involve use of
'executable' files






Complete loss of previously
stored data






Network technical staff not
performing essential daily
maintenanc
e tasks resulting
in network inefficiencies



Lack of user awareness to
Network security resulting in
poor working practices and
insecurity of data



Hackers accessing, deleting,
corrupting or stealing data
stored on the network






2


Risk

Solution(s)

Related issues

Legitimate users unable to
access important files
across a WAN resulting in
decreased productivity



If stolen, data easily used by
unauthorised persons







2.

Put the following access rights into order...



Highest level of access

Admin
istrator (Supervisor)

Administrator (Supervisor)


Write



File scan



Read



Create



Modify



Erase



No rights (denies any access)




Lowest level of access


3.

Read the photocopy supplied (Source: Heathcote) and try the encryption exercises on
Pag
e 324
-
325 (from the photocopy).


4.

Do questions 2, 3 and 7 from the end of the chapter.


Network accounting


(
Read Pages 264
-
268 on 'Network accounting')


5.

Group discussion based upon 'Activity: Network accounting' from Page 274.


6.

Do questions 6 and 8a from t
he end of the chapter.


Protocols and standards

(
Read Pages 269
-
271 on 'Protocols')


7.

Do questions 1, 4, 5 and 9 from the end of the chapter.


8.

Read about the following protocols from Page 271...


FTP

HTTP

IP

TCP/IP

POP3

PPP