Symantecâ¢ Security Gateways Reference Guide - Sawmill

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6 ContentsMail server record ..............................................................................................................................................39Name server record ...........................................................................................................................................40Recursion record ................................................................................................................................................40Root server record .............................................................................................................................................41Subnet record .....................................................................................................................................................41Chapter 4Chapter 5Chapter 6Understanding accessNetwork protocols .....................................................................................................................................................43Protocols with a proxy ......................................................................................................................................43Protocols without a proxy ................................................................................................................................44Custom protocols ...............................................................................................................................................47Proxies .........................................................................................................................................................................48Application data scanning ................................................................................................................................48The CIFS (SMB) proxy .......................................................................................................................................49The DNS proxy ...................................................................................................................................................52The FTP proxy ....................................................................................................................................................53The H.323 proxy .................................................................................................................................................54The HTTP proxy .................................................................................................................................................54The NBDGRAM proxy .......................................................................................................................................56The NNTP proxy ................................................................................................................................................56The NTP proxy ...................................................................................................................................................57The ping proxy ...................................................................................................................................................57The RCMD proxy ................................................................................................................................................57The RTSP proxy .................................................................................................................................................57The SMTP proxy ................................................................................................................................................58The Telnet proxy ................................................................................................................................................60Generic Server Proxy (GSP) .............................................................................................................................61Third-party proxies (appliance only) ..............................................................................................................61Service groups ............................................................................................................................................................62Rules ............................................................................................................................................................................63Rule definitions ..................................................................................................................................................63Rule priority .......................................................................................................................................................64Rules with groups ..............................................................................................................................................65Rule authentication ...........................................................................................................................................65Controlling service accessFilters ...........................................................................................................................................................................67Understanding filters ........................................................................................................................................67Types of filters ...................................................................................................................................................68How filters are used ...........................................................................................................................................69Filter processing ................................................................................................................................................70Content filtering ........................................................................................................................................................71Rating Profiles ....................................................................................................................................................71URL List ...............................................................................................................................................................72URL pattern matching ......................................................................................................................................72MIME Types ........................................................................................................................................................74File Extensions ...................................................................................................................................................74Newsgroups ........................................................................................................................................................75Newsgroup Profiles ...........................................................................................................................................75Controlling user accessUsers ............................................................................................................................................................................77Types of users .....................................................................................................................................................77Authentication ...........................................................................................................................................................78
Contents7Authentication in rules .....................................................................................................................................78Authentication methods ...................................................................................................................................78Weak and strong authentication systems .....................................................................................................79Bellcore S/Key authentication .........................................................................................................................79Entrust authentication .....................................................................................................................................80Gateway password authentication ..................................................................................................................80LDAP authentication .........................................................................................................................................81Microsoft Windows NT Domain ......................................................................................................................82Out Of Band Authentication (OOBA) ..............................................................................................................83PassGo Defender authentication .....................................................................................................................83RADIUS authentication ....................................................................................................................................85RSA SecurID authentication ............................................................................................................................85TACACS+ authentication ..................................................................................................................................86Time Periods ...............................................................................................................................................................86Time range template .........................................................................................................................................86Time range sequence .........................................................................................................................................86Chapter 7Chapter 8Understanding VPN tunnelsIntroduction to IP security .......................................................................................................................................87Tunnels ........................................................................................................................................................................88Tunnel endpoints ...............................................................................................................................................88Tunnel indexes ...................................................................................................................................................89Tunnel communication .....................................................................................................................................89Tunnel security ..................................................................................................................................................89Types of tunnels .................................................................................................................................................90Groups .........................................................................................................................................................................91IPsec standard ............................................................................................................................................................91Encapsulation modes ........................................................................................................................................92Data integrity protocol .....................................................................................................................................93Data privacy preference ...................................................................................................................................96Data integrity preference .................................................................................................................................97Data compression preference ..........................................................................................................................97Tunnel encryption keys ....................................................................................................................................98VPN Policies ................................................................................................................................................................99Global IKE Policy ........................................................................................................................................................99Monitoring security gateway trafficActive connections ..................................................................................................................................................101View logs ...................................................................................................................................................................101Collecting statistics on connections .............................................................................................................102Changelog ..........................................................................................................................................................102Managing the log file size ...............................................................................................................................102Flatten utility ....................................................................................................................................................103SESA event gating ...................................................................................................................................................103Reports setup ............................................................................................................................................................105Configuration reports .............................................................................................................................................105Notifications .............................................................................................................................................................107Audio ..................................................................................................................................................................107Email ..................................................................................................................................................................107Pager ..................................................................................................................................................................107Client ..................................................................................................................................................................108SNMP notifications ..........................................................................................................................................108Advanced options ....................................................................................................................................................109
Page 1 and 2: Symantec Security GatewaysReference
Page 3: Licensing and registrationContactin
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
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56 Understanding accessProxiesThe N
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58 Understanding accessProxiesThe S
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60 Understanding accessProxiesTable
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62 Understanding accessService grou
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64 Understanding accessRulesTable 4
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66 Understanding accessRulesWhen a
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68 Controlling service accessFilter
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70 Controlling service accessFilter
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72 Controlling service accessConten
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78 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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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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352 IDS eventsIntrusion attemptsWAR
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354 IDS eventsProbesSensor Record F
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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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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