SECURING FIBRE CHANNEL FABRICS - Brocade

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Chapter 3: SAN Basics for Security Professionalsswitches in the fabric. However, this is the least scalable fabric topologydue to the exponential increase in links required as the number ofswitches increases.Switch ASwitch BSwitch CSwitch FSwitch DSwitch EFigure 11. Full mesh topologyThe formula for the number of ISLs required to create a full meshtopology is:1 + 2 + … + (N-1)where “N” is the number of switches.For example: a five-switch full mesh fabric would require:1 + 2 + 3 + (5-1) = 1 + 2 + 3 + 4 = 10 ISLsTable 6. Full mesh topology ISL and port requirements# of Switches # of ISLs # of Ports2 1 23 3 64 6 125 10 206 15 307 21 428 28 569 36 7210 45 9011 55 11012 66 13238 Securing Fibre Channel Fabrics
FC Fabric Features and ServicesAs can be seen from Table 6, the number of ISLs required increasessignificantly for each additional switch. It is important to note thateach ISL also requires two ports; one at each end switch. Eventually,there will be more ports using ISLs than actual hosts and storagedevices in the fabric and switches simply won't have enough ports toconnect all the switches.To improve scalability, a mesh topology can also be constructed as apartial mesh, as shown in Figure 19. In this case, most, but not all,switches are connected to all other switches in the fabric. This is amore scalable alternative to a full mesh design, but at the expense ofpath redundancy and possibly performance.Switch ASwitch BSwitch CSwitch FSwitch DSwitch EFigure 12. Partial mesh topologyCore-Edge TopologyThe core-edge topology is the most commonly implemented and it representsthe best compromise among redundancy, scalability,performance, and cost. There are several variations of a core-edgearchitecture.Pure core-edge architectures are designed so that all of the trafficmust go through the core switch, hence only other switches can beconnected to a core switch. The hosts and storage devices are connectedto edge switches, as shown in Figure 20. In reality, most coreedgeimplementations actually connect some storage or host devicesto core switches to maximize the cost efficiency of the fabric and makethe best utilization of available ports, as shown in Figure 21.Securing Fibre Channel Fabrics 39
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SECURINGFIBRECHANNELFABRICSSECOND E
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Page 6 and 7: © 2012 Brocade Communications Syst
Page 8 and 9: viSecuring Fibre Channel Fabrics
Page 10 and 11: viiiSecuring Fibre Channel Fabrics
Page 12 and 13: ContentsChapter 4: Security Basics
Page 14 and 15: ContentsIsolation and Separation ..
Page 16 and 17: ContentsxivSecuring Fibre Channel F
Page 18 and 19: Chapter 1: Introduction• The Euro
Page 20 and 21: Chapter 1: IntroductionThe SAN Secu
Page 22 and 23: Chapter 1: IntroductionInternet sta
Page 24 and 25: Chapter 1: Introductionoften, the s
Page 26 and 27: Chapter 2: SAN Security MythsSAN Se
Page 29 and 30: SAN Security Myth Number 5SAN Test
Page 31 and 32: SAN Security Myth Number 6To demons
Page 33 and 34: SAN Security Myth Number 7SAN Secur
Page 35 and 36: SAN Basics for SecurityProfessional
Page 37 and 38: Evolution of the FC ProtocolTable 1
Page 39 and 40: Fibre Channel BasicsTable 2. FC pro
Page 41 and 42: Fibre Channel BasicsFC FabricsFC fa
Page 43 and 44: Fibre Channel BasicsType Category N
Page 45 and 46: FC Fabric Features and ServicesAn F
Page 47 and 48: FC Fabric Features and Servicesing
Page 49 and 50: FC Fabric Features and ServicesWhen
Page 51 and 52: FC Fabric Features and ServicesAnd
Page 53: FC Fabric Features and ServicesSwit
Page 57 and 58: FC Fabric Features and ServicesSwit
Page 59 and 60: FC Fabric Features and Servicesothe
Page 61 and 62: Security Basics forStorage Professi
Page 63 and 64: Security Modelshave enacted such le
Page 65 and 66: Security Modelssures must be taken
Page 67 and 68: Types of ThreatsTypes of ThreatsA t
Page 69 and 70: Types of ThreatsOne significant thr
Page 71 and 72: Types of Threatsside attacks such t
Page 73 and 74: Types of Threatsences from previous
Page 75 and 76: AttacksAttacksAttackers have many o
Page 77 and 78: Attackstion between the two parties
Page 79 and 80: Identification and AuthenticationBi
Page 81 and 82: Physical SecurityOne challenge with
Page 83 and 84: Physical SecurityPhysical access co
Page 85 and 86: Information Disposal and Sanitizati
Page 87 and 88: Chapter SummaryAlgorithm Passes Des
Page 89 and 90: Elementary Cryptography5This chapte
Page 91 and 92: Common Cryptography TermsHere are s
Page 93 and 94: Symmetric vs. Asymmetric Cryptograp
Page 95 and 96: Cryptographic Algorithms• Range o
Page 97 and 98: Cryptographic AlgorithmsHashing alg
Page 99 and 100: Modes of Operationencryption proces
Page 101 and 102: Modes of OperationRSAAt around the
Page 103 and 104: Key ManagementSSL can be used with
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Key ManagementBrocade Encryption De
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FC Security Best Practices6In previ
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The Brocade SAN Security ModelThe m
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The Brocade SAN Security ModelStora
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The Brocade SAN Security ModelChann
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The Brocade SAN Security Modelrestr
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The Brocade SAN Security Modeltem a
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The Brocade SAN Security ModelPassw
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The Brocade SAN Security ModelData
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The Brocade SAN Security ModelWith
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Encrypting Data-in-FlightEncrypting
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Encrypting Data-at-RestEncrypting D
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Encrypting Data-at-Restand disk dev
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Encrypting Data-at-RestPhysical Sec
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Encrypting Data-at-RestTraining and
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Chapter SummaryChapter SummaryAltho
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Deploying SAN-AttachedDevices in a
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Securing the Servers in the DMZpoli
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Securing the Storage DevicesFor exa
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Securing the Storage DevicesInterne
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Auditing and Assessing the SANAudit
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Securing FOS-Based Fabrics8When it
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Securing Management InterfacesThe f
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Securing Management InterfacesThe t
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Securing Management InterfacesFilte
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Securing Management InterfacesThe f
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Securing Management Interfacesadmin
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FC-Specific SecurityFC-Specific Sec
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FC-Specific SecurityBrocade-support
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FC-Specific SecurityTo prevent this
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Fabric-Based Encryptionthe Brocade
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Fabric-Based Encryption3. (LDAP onl
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Chapter SummaryInsistent Domain IDI
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Compliance and Storage9Certainly, m
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Payment Card Industry Data Security
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Breach Disclosure LawsThe precedent
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Gramm-Leach-Bliley Act (GLBA)vides
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Federal Information Processing Stan
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Common Criteria (CC)allow different
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Defense Information Systems Agency
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Other SAN Security Topics10SAN secu
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The Future of Key ManagementThe Fut
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Brocade Data EncryptionProducts11Br
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Brocade Encryption for Data-At-Rest
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Brocade Encryption for Data-At-Rest
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Brocade Encryption Features• Data
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Brocade Encryption FeaturesThe next
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Brocade Encryption FeaturesDEK clus
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Brocade Encryption Featuresthe DEK
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Brocade Encryption FeaturesThe foll
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Brocade Encryption InternalsFigure
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Design and Implementation Best Prac
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Design and Implementation Best Prac
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Brocade Encryption for Data-In-Flig
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Chapter SummarySite ACiphertextSite
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Fabric OS SecurityFeatures MatrixAL
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Security FeatureFOS2.xFOS3.xFOS4.x+
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Security FeatureFOS2.xFOS3.xFOS4.x+
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Standards Bodies andOther Organizat
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IETFSpecifically, the SNIA Security
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IndexNumerics3DES 4Aaccess control
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Indexhuman threat 9Iidentification
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SECURING FIBRE CHANNEL FABRICS - Brocade

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