DeepSurface: TOFU
DocumentationInstallation GuideOverviewLet DeepSurface Host For YouGetting StartedSystem RequirementsSelf Hosted Quick Start - Installing to Cloud PlatformsSelf Hosted - Installation Using an OVARegistration, Package Installation, and InitializationFirst Steps After Initialization of the ConsoleDeployment OptionsMain and Subordinate ConsolesAgent-Based DeploymentUser Managed Scan DeploymentCredentialed Scanning DeploymentMixed EnvironmentDeployment ToolsActive Directory Group PolicyMicrosoft Endpoint Configuration Manager (part of InTune)Tanium DeployHCL BigFixIvantiVirtual MachinesVMWareVirtual BoxVirtualBox Guest AdditionsAWS EC2 (BYOL)AWS EC2 (Usage Based)Azure CloudGoogle CloudAdditional Items to ConsiderMain Console Server CertificatesLDAPTOFUClock SyncDeepSurface CommandsMultiple Vulnerability SourcesAPI DocumentationUser GuideReportingDashboardsExportsRisk InsightHostsPatchesVulnerabilitiesVulnerability InstancesUsersRemediation Workflow ManagerPlansSettingsIntegrationsWorkflowExportingAccepted Risk PlansAccepted Risk WorkflowExploreModelPathsActivityTasksConfiguration AlertsScan LogsNotification SettingsScanningStatusAgentsUser ManagedCredentialed Scanning SettingsCredentialsScan GroupsGeneral SettingsCloud ScanningNetwork ConnectivitySubordinatesVulnerability SourcesSetupSensitive Assets: PolicesSensitive Assets: ManualAdmin SettingsSMTP SettingsCertificatesOutbound ProxyAuthentication ProvidersUsersTagsIntegrations GuideVulnerability SourcesCrowdStrike SpotlightSentinelOneCarbon Black CloudMicrosoft Defender for EndpointWazuhLansweeper CloudNessus APITenable.io APISecurity Center/Tenable.sc APIRapid7 InsightVM APIQualys APINozomi GuardianEclypsiumAWS InspectorRemediationJira SoftwareTanium (BETA)Authentication ProvidersLDAP (Active Directory)SAML (Azure Active Directory)SAML (Google)SAML (Okta)PAMCyberArkDelinea (Thycotic)Microsoft LAPSSecurity GuideFirewall ConfigurationBase Network RequirementsAgent Network RequirementsCredentialed Scanning Network RequirementsAPI Network RequirementsHow DeepSurface Scans WorkDomain (LDAP) ScanningHost Scanning RoutineReasons for the Administrative Access RequirementEndpoint Protection ConsiderationsOther ItemsScope of Data Storage and RetentionIPS/IDS ConsiderationsLoggingResetting the DSADMIN passwordProduct InformationChangelogsOpen source LicensesEnd User License Agreement (EULA)
If TOFU is enabled, then the first time a service is used, whatever certificate is provided will be recorded and used for future validation. After this first validation, if the certificate ever changes to a different, untrusted certificate, the connection will fail. There may be a legitimate reason the certificate changed. If you are confident you understand the reason, you can clear previously stored certificates in Setup > Certificates.
If an LDAPS or LDAP/StartTLS service presents a certificate that isn't signed by a known CA (e.g. a self-signed certificate), then DeepSurface will reject this certificate unless TOFU is enabled.
TOFU allows for a much simpler deployment while minimizing the window of opportunity for man-in-the-middle attacks. However, in high-security environments, DeepSurface Security recommends TOFU be disabled and that every service be configured with a signed certificate from a trusted CA.