PowerPoint

6.1 # # 3# SNMP

SNMPSimple Network Management ProtocolSNMPSNMPIPIPXAppleTalkOSISNMP# RMON

RMON# WEB

WebWebWeb#

,#

:(1)(2)(3)#

,#

:(1)(2)(3)(4)(5)(6)#

VPN#

:(1)(2)(3)#

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(security management),: ( ), (authentication)(), (()#SNMP2080InternetHEMSSGMPCMIS/CMIP##

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FCSCSTLC

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LC-FCFC-FCFC-SCSC-LC

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LC-FCFC-FCFC-SCSC-LC

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switchingRouter #

# ,(,,)#BUG

#I VAP-internet Value-added Provision

#NGN

#NGNNGINGINGNNGNNGI

#6.2 #

#2090NCSCDoD5200.28_STDTrusted Computer Standard Evaluation CriteriaOrange Book#DoD5200.28_STD

D1C1C2B1C2B2B3A1#GB17859---19995

#12

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interceptioninterruptionmodificationfabrication#25IPIP#rogue programcomputer viruslogic bombTrojan horsecomputer worm#

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#6.3 #

#3###CaesarplayfairHill##DESIDEA RSA#DESDES 648 5664#DES

#IDEAIDEA12864XueJia LaiIDEA84IDEA#IDEAIDEA64128IDEA21621610216#RSA ##6.4 #http://www.csai.cn/incsearch/search.asp?key=%B7%FE%CE%F1%C6%F7#;;#####USB KeyUSB Key#123#123

#RSA #APKAEASKADAABmBPKBEBSKBDB AADAmDA(m),BEBDA(m)C= EB(DA(m))BCDBCDB(C)=DB (EB(DA(m)))=DA(m)AEADA(m)EA(DA(m))=mm###

AInternetBBAAInternetCAB#

#CPU

#MDMessage Digest AMCACCACAMCA+MInternetBBCAMCAASCMBCB#

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Certification Authority , CACACACA#

#InternetInternet

#InternetIPsec(IP Security IP)Security AssociationSA IPsecAuthentication header ,AHEncapsulation Security Payload ESPAHESPESPAHAHESPAH

#Internet

(SA)IPsecInternetAHESP

#Internet

SAIPAHESPSecurity Parameter Index , SPIIPsec32#Internet

#InternetAHAHIPIP51AH

#InternetESPESPESPAHIPAHESPIP50ESPESPIPESPESP

#InternetSecure Socket Layer SSLSSLIPIP

#InternetSSLSETSceure Electronic Transaction Internet

#Internet

PGPPretty Good Provacy , PGP#InternetPGP

#InternetPDU

#InternetMABB#6.5 #firewallInternettrusted networkuntrusted network

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#authorization serverpacket filtering#proxy server#