net sect 1

• network security have 3 types ,  a) confidentially

                                                           b) integrity
                                                           c) availability

• information security------------     accountability

what we can do to protect our pc?

• create password
• encrypt
• hidden folder
• do different account for user n guess

CONCEPT OF PING

kenapa guna subnetmask?
= utk jdkn lbh kcil.mnjd bhgian2

CONCEPT OF PING?

A)komputer A 192.168.1.2
                        255.255.0.0
    komputer B 192.168.2.3
                       255.255.0.0
           = DU(destination unreachable)

B)komputer A 192.168.1.2/24
                       255.255.255.0
    komputer B 192.168.1.3/24
                       255.255.255.0
           = REPLY

C)komputer A 192.168.1.2/16
                       255.255.0.0
    komputer B 192.168.2.3/24
                       255.255.255.0
           = A TO B (RTO= request time out)
           = B TO A (DU = destination unreachable)

D) komputer A 10.1.2.3/16
                        255.255.0.0
     komputer B 10.20.30.40/16
                        255.255.0.0
           = A TO B (DU)
           = B TO A (DU)

E) komputer A 10.1.2.3/16
                        255.255.0.0
     komputer B 10.1.2.30/16
                        255.255.0.0
          = both REPLY

hari ini..8.02.2013

belajar buat pemasangan kabel utp,,,fuhhh pyh kot,,
ni pn mls dh xjd sgt,,try n error...try n success xleh..
len kli kne bwt len la..

-potong wayar lbh kurang dlm 2m
-cut wayar ke dua2 hujung
-luruskan wayar dlm then
-susun ikut warna hujung 1 n 2

at the end jd la mcm ni...then try kt tester..:P

IP Address

kelas A ----- 1-126
kelas B ----- 127-191
kelas C ----- 192-223
kelas D ----- 224-239(multicasting)
kelas E ----- 240-255(quality of service)

IP---static n dynamic

IPv4 and IPv6(terbaru)

ipconfig/all----ip address
                ----mac address/physical address
                ----DNS
                ----subnetmask

kalau dlm cmd nk bwt ip kne letak *ping*
cthnye --ping ipconfig/all
           --ping 127.0.0.1

WAN ip dynamic

nslookup google.com(75.125.135.102)
nslookup yahoo.com(198.138.253.109 @ 198.139.183.24)

ip utk laptop ade 3----network,wireless,telefon...

ISP(internet service provider)--->LIR(local internet registry)--->RIR(regional internet registry)

subnetmask--net id n host id

about OSI

http://en.wikipedia.org/wiki/OSI_model

how stuff works(fiber optik)

http://computer.howstuffworks.com/fiber-optic.htm