Symantecâ¢ Security Gateways Reference Guide - Sawmill

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30 Network security overviewManagement scenarios
Chapter 3<strong>Security</strong> gateway fundamentalsThis chapter includes the following topics:■■■RoutesNetwork entitiesDomain Name Service (DNS)RoutesRouting is the process of choosing a path over which to send packets of information. For the securitygateway to function properly, you must define specific routes. Administrators set default routes accordingto instructions specific to their platforms. Almost all discussions on routing and data communicationsrequire an understanding of the publicly accepted terms and technology involved. This section presentssome of that underlying technology behind data communications and how it works.The Open Systems Interconnect <strong>Reference</strong> ModelSymantec security gateways adhere to the Open System Interconnection (OSI) reference model developedby the International Standards Organization (ISO). This model, shown in Figure 3-1, provides a commonreference for discussing data communications, and consists of seven layers, with each layer providing aspecific type of service.Figure 3-1The OSI reference model network stack
Page 1 and 2: Symantec Security GatewaysReference
Page 3: Licensing and registrationContactin
Page 6 and 7: 6 ContentsMail server record ......
Page 8 and 9: 8 ContentsChapter 9Chapter 10Append
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Page 12 and 13: 12 Introducing Symantec security ga
Page 14 and 15: 14 Introducing Symantec security ga
Page 16 and 17: 16 Network security overviewSecurit
Page 24 and 25: 24 Network security overviewManagem
Page 32 and 33: 32 Security gateway fundamentalsRou
Page 38 and 39: 38 Security gateway fundamentalsDom
Page 44 and 45: 44 Understanding accessNetwork prot
Page 46 and 47: 46 Understanding accessNetwork prot
Page 48 and 49: 48 Understanding accessProxiesProxi
Page 50 and 51: 50 Understanding accessProxiesExamp
Page 52 and 53: 52 Understanding accessProxiesThe D
Page 54 and 55: 54 Understanding accessProxiesThe H
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Page 58 and 59: 58 Understanding accessProxiesThe S
Page 60 and 61: 60 Understanding accessProxiesTable
Page 62 and 63: 62 Understanding accessService grou
Page 64 and 65: 64 Understanding accessRulesTable 4
Page 66 and 67: 66 Understanding accessRulesWhen a
Page 68 and 69: 68 Controlling service accessFilter
Page 70 and 71: 70 Controlling service accessFilter
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Page 78 and 79: 78 Controlling user accessAuthentic
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80 Controlling user accessAuthentic
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86 Controlling user accessTime Peri
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88 Understanding VPN tunnelsTunnels
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90 Understanding VPN tunnelsTunnels
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92 Understanding VPN tunnelsIPsec s
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100 Understanding VPN tunnelsGlobal
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102 Monitoring security gateway tra
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114 Preventing attacksAntivirus (ap
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116 Preventing attacksIntrusion det
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118 Preventing attacksLogical netwo
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120 Preventing attacksAddress trans
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126 Preventing attacksAnti-spam mea
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128 Ensuring availabilitySymantec
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130 Ensuring availabilityStateful f
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132 Ensuring availabilityCluster ad
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134 Log messagesInformational messa
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158 Log messagesNotice messages (20
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176 Log messagesWarning messages (3
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256 Log messagesAlert messages (500
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258 Log messagesAlert messages (500
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260 Log messagesCritical messages (
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270 Log messagesEmergency messages
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272 Log messagesEmergency messages
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274 IDS eventsAbout IDS/IPS events
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296 IDS eventsDenial-of-ServiceTabl
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298 IDS eventsDenial-of-ServiceResp
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300 IDS eventsDenial-of-ServiceMalf
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302 IDS eventsIntrusion attemptsUnk
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304 IDS eventsIntrusion attemptsCod
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306 IDS eventsIntrusion attemptsDNS
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308 IDS eventsIntrusion attemptsAff
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312 IDS eventsIntrusion attemptsFTP
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314 IDS eventsIntrusion attemptsHTT
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320 IDS eventsIntrusion attemptsIMA
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322 IDS eventsIntrusion attemptsIRC
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324 IDS eventsIntrusion attemptsIRC
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328 IDS eventsIntrusion attemptsNim
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330 IDS eventsIntrusion attemptsNim
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332 IDS eventsIntrusion attemptsOSP
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334 IDS eventsIntrusion attemptsRlo
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342 IDS eventsIntrusion attemptsSta
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352 IDS eventsIntrusion attemptsWAR
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354 IDS eventsProbesSensor Record F
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356 IDS eventsProbesAffected:No spe
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358 IDS eventsSignaturesSMTP Probin
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360 IDS eventsSignaturesHTTP IIS IS
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362 IDS eventsSignaturesAffected: A
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364 IDS eventsSuspicious activitySu
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366 IDS eventsSuspicious activityBG
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368 IDS eventsSuspicious activityBG
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370 IDS eventsSuspicious activityDN
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372 IDS eventsSuspicious activityFT
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374 IDS eventsSuspicious activityAf
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378 IDS eventsSuspicious activityHT
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392 IDS eventsSuspicious activityId
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444 IDS eventsSuspicious activityOS
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446 IDS eventsSuspicious activityOS
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448 IDS eventsSuspicious activityPO
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450 IDS eventsSuspicious activityRl
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452 IDS eventsSuspicious activityRP
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458 IDS eventsSuspicious activitySM
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462 IDS eventsSuspicious activitySO
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508 IDS eventsSuspicious activity
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510 IndexIP address spoofing 21Man-
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512 IndexHH.323alias report 105prox
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514 IndexRTSP 57service parameters
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516 Index
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Symantecâ¢ Security Gateways Reference Guide - Sawmill