introduction to basics
DESCRIPTION
Introduction to basics. 實作課程： Wireshark 、網路線製作 陳鴻偉、蘇誌毅 2012/09/10. Wireshark. 官網： http ://www.wireshark.org / 支援多種作業系統 一般常用在網路故障排除、監聽異常封包 、 軟體 封包問題檢測等地方. Wireshark 簡介. 目的：透過基本的封包擷取，瞭解 Wireshark 的使用流程 。 從實習中 我們必須要知道 sniffer 的運作原理，習得呈現內容過濾的技巧，並利用 stream 彙整的功能找到需要的資訊。. 明碼封包的截取與觀察. 功能表 列 →. - PowerPoint PPT PresentationTRANSCRIPT
PowerPoint
Introduction to basicsWireshark2012/09/101Wireshark2Wiresharkhttp://www.wireshark.org/
3Wireshark
snifferstream4
()5Wireshark(1)Wiresharkpcmanppt.ccWiresharkptt.ccwiresharktelnet6Wireshark(2)Wiresharkpcmanppt.cc:443Wiresharkptt.cc:443wiresharkSSL7
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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)
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2122
CATCategory1~65eCategory 55e1000 Mbps23EIA/TIAEIA/TIA 568BCrossoverEIA/TIA 568AEIA/TIA 568B
2412364578
100 Bese TXRJ-45
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