PowerPoint

Introduction to basicsWireshark2012/09/101Wireshark2Wiresharkhttp://www.wireshark.org/

3Wireshark

snifferstream4

()5Wireshark(1)Wiresharkpcmanppt.ccWiresharkptt.ccwiresharktelnet6Wireshark(2)Wiresharkpcmanppt.cc:443Wiresharkptt.cc:443wiresharkSSL7

8

9

10Wireshark(3)

ip

mac address112012/09/10IPIP32Bits8Bit4.IP=Network ID+Host IDIP Class

IPHost ID0Host ID1Network IDHost ID1Loopback127.0.0.1TCP/IPPrivate10.0.0.0/8172.16.0.0/20192.168.0.0/16

Subnet168.95.0.0(Class B)Host ID168.95.0.010101000 01011111(Network ID) 00000000 00000000(Host ID)23=83Bits10101000 01011111(Network ID) 000(Subnet ID) 00000 00000000 (Host ID)10101000 01011111(Network ID) 001(Subnet ID) 00000 00000000 (Host ID)10101000 01011111(Network ID) 010(Subnet ID) 00000 00000000 (Host ID)10101000 01011111(Network ID) 011(Subnet ID) 00000 00000000 (Host ID)10101000 01011111(Network ID) 100(Subnet ID) 00000 00000000 (Host ID)10101000 01011111(Network ID) 101(Subnet ID) 00000 00000000 (Host ID)10101000 01011111(Network ID) 110(Subnet ID) 00000 00000000 (Host ID)10101000 01011111(Network ID) 111(Subnet ID) 00000 00000000 (Host ID)

Subnet MaskSubnet Mask32Bits1(Network ID+Subnet ID)0(Host ID)10101000 01011111 000 00000 00000000 10101000 01011111 001 00000 00000000 10101000 01011111 010 00000 0000000010101000 01011111 011 00000 00000000 10101000 01011111 100 00000 00000000 10101000 01011111 101 00000 0000000010101000 01011111 110 00000 00000000 10101000 01011111 111 00000 00000000 Subnet Mask=11111111 11111111 11100000 00000000 (255.255.224.0)168.95.0.0/19168.95.32.0/19168.95.64.0/19168.95.96.0/19168.95.128.0/19168.95.160.0/19168.95.192.0/19168.95.224.0/19

QuestionClass C IP203.74.205.0 (Class C)4Host IDSubnet MaskIP

Questionnetstatnetstat nanetstat nr(Hintroute add)

20

2122

CATCategory1~65eCategory 55e1000 Mbps23EIA/TIAEIA/TIA 568BCrossoverEIA/TIA 568AEIA/TIA 568B

2412364578

100 Bese TXRJ-45

25

26()(), ()27

28

29

30

31

32

33

34

35