SECURING FIBRE CHANNEL FABRICS - Brocade

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Chapter 6: FC Security Best PracticesAssessments and auditsSAN SecurityTraining and awarenessPoliciesOperational securityPhysical securityHBAFCHWStoragePhysical securityEncrypt. data-in-flightHBAsecurityMgmtinterfaceHBAEncrypt. data-in-flightFC securityMgmtinterfaceFCHWEncrypt. data-at-restStorage securityMgmtinterfaceStorageFigure 1. SAN Security Model92 Securing Fibre Channel Fabrics
The <strong>Brocade</strong> SAN Security ModelThe model resembles an onion with layers of skin around its core (OK,perhaps a “mutant” onion with three cores). At the center, the threebasic types of SAN hardware are represented by the three smaller circlesfor the HBA, storage hardware (disk and tape), and fabricinfrastructure hardware (switches, directors, and routers). Surroundingthe SAN hardware is a series of concentric circles outlining the layersof security to protect that specific type of hardware.Protecting the HBAThe HBA is the link between the hosts running applications and theSAN, in which the application data is stored. The HBA requires specificprotection measures since it has its unique set of vulnerabilities. Tohelp mitigate the risks associated with these vulnerabilities, each HBAvendor offers specific security features and enhancements.HBA security features can include the following:• LUN masking, generally implemented at the storage device (diskarray) level, however, some HBA vendors provide the ability to performLUN masking at the HBA level.• DH-CHAP support, as defined in the ANSI T11 FC-SP standard, toauthenticate an HBA when joining a fabric. This is usually done toprotect against WWN spoofing attacks.• Secure management interfaces and protocols such as SSH tosecure the CLI interface and SSL to secure the GUI interface.How real is WWN spoofing? This question certainly comes up frequentlyand the answer is not always simple. It is possible to changethe WWN on any HBA; tools are available from most HBA vendors thatallow users to do this and some are also available as freeware.For example, an attacker from the outside could theoretically compromisea server in a DMZ (although originally a military term, in computersecurity, Data Management Zone), reconfigure the compromisedserver's WWN to the WWN of a production server’s WWN, and capturedata intended for the other host.How likely is this to occur? With proper security measures in place, thistype of attack is very unlikely. However, if the value of an asset is particularlyhigh or attractive to someone, then the likelihood of an attackon that asset increases, no matter how difficult or sophisticated theattack needs to be. Generally though, only the most sensitive environments,such as military and intelligence organizations, as well as someprivate organizations, require protection against WWN spoofingattacks.Securing Fibre Channel Fabrics 93
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SECURINGFIBRECHANNELFABRICSSECOND E
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SECURINGFIBRECHANNELFABRICSSECOND E
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© 2012 Brocade Communications Syst
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viSecuring Fibre Channel Fabrics
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viiiSecuring Fibre Channel Fabrics
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ContentsChapter 4: Security Basics
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ContentsIsolation and Separation ..
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ContentsxivSecuring Fibre Channel F
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Chapter 1: Introduction• The Euro
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Chapter 1: IntroductionThe SAN Secu
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Chapter 1: IntroductionInternet sta
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Chapter 1: Introductionoften, the s
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Chapter 2: SAN Security MythsSAN Se
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SAN Security Myth Number 5SAN Test
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SAN Security Myth Number 6To demons
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SAN Security Myth Number 7SAN Secur
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SAN Basics for SecurityProfessional
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Evolution of the FC ProtocolTable 1
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Fibre Channel BasicsTable 2. FC pro
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Fibre Channel BasicsFC FabricsFC fa
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Fibre Channel BasicsType Category N
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FC Fabric Features and ServicesAn F
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FC Fabric Features and Servicesing
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FC Fabric Features and ServicesWhen
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FC Fabric Features and ServicesAnd
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FC Fabric Features and ServicesSwit
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FC Fabric Features and ServicesAs c
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
Page 105 and 106: Key ManagementBrocade Encryption De
Page 107: FC Security Best Practices6In previ
Page 111 and 112: The Brocade SAN Security ModelStora
Page 113 and 114: The Brocade SAN Security ModelChann
Page 115 and 116: The Brocade SAN Security Modelrestr
Page 117 and 118: The Brocade SAN Security Modeltem a
Page 119 and 120: The Brocade SAN Security ModelPassw
Page 121 and 122: The Brocade SAN Security ModelData
Page 123 and 124: The Brocade SAN Security ModelWith
Page 125 and 126: Encrypting Data-in-FlightEncrypting
Page 127 and 128: Encrypting Data-at-RestEncrypting D
Page 129 and 130: Encrypting Data-at-Restand disk dev
Page 131 and 132: Encrypting Data-at-RestPhysical Sec
Page 133 and 134: Encrypting Data-at-RestTraining and
Page 135 and 136: Chapter SummaryChapter SummaryAltho
Page 137 and 138: Deploying SAN-AttachedDevices in a
Page 139 and 140: Securing the Servers in the DMZpoli
Page 141 and 142: Securing the Storage DevicesFor exa
Page 143 and 144: Securing the Storage DevicesInterne
Page 145 and 146: Auditing and Assessing the SANAudit
Page 147 and 148: Securing FOS-Based Fabrics8When it
Page 149 and 150: Securing Management InterfacesThe f
Page 151 and 152: Securing Management InterfacesThe t
Page 153 and 154: Securing Management InterfacesFilte
Page 155 and 156: Securing Management InterfacesThe f
Page 157 and 158: 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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