Improving Web Application Security: Threats and - CGISecurity

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534 Part IV: Securing Your Network, Host and ApplicationTable 18.5 Snapshot of a Secure Database Server (continued)Component CharacteristicsAccountsSQL Server service account is secured (least privileged).Unnecessary Windows accounts are deleted or disabled.The Windows guest account is disabled.A new administrator account is created.Strong password policy is enforced.Remote logons are restricted.Null sessions (anonymous logons) are disabled.Approval is required for account delegation.Shared accounts are not used.Membership of the local Administrators group is limited (ideally, no more thantwo members).The administrator account is limited to interactive logins (or a secure remoteadministration solution is provided).NTLMv2 authentication is enabled and enforced (LMCompatibilityLevel is setto 5).Files and DirectoriesVolumes are formatted with NTFS.Everyone group has no rights to system or tools directories.Samples directories, Help directories, and unused admin directories areremoved from the server.Permissions are hardened on SQL Server installation folder.Passwords removed from Service Pack 1 and Service Pack 2 setup log files.Tools, utilities and SDKs are removed.Unused applications are removed.Sensitive data files are encrypted using EFS. (This is optional for databasefiles (.mdf), but not for log files (.ldf)).SharesUnnecessary shares are removed from the server.Access is restricted to required shares.Shares are not accessible by Everyone, unless necessary.Administration shares (C$, Admin$) are removed if they are not required.
Chapter 18: Securing Your Database Server 535Table 18.5 Snapshot of a Secure Database Server (continued)Component CharacteristicsPortsAll ports except SQL Server listening port [Default 1433] are blockedNamed instances are configured to listen on the same port.A non-standard SQL Server port (not TCP 1443) is used as an additional layerof defense.The hide server option is used as an additional layer of defense (optional).The firewall is configured to support DTC traffic (if necessary).A firewall is used to separate users from the SQL TCP/IP port.RegistryEveryone group is removed from SQL Server registry keys.SAM is secured (stand-alone servers only).Auditing and LoggingFailed Windows logon attempts are logged.Failed actions across the file system are logged.SQL Server SettingsSQL Server SecuritySQL Server login auditing is enabled.Authentication setting for SQL Server is Windows Only if possible.SQL Server audit level set to Failure or All.The SQL Server Startup Service account is a least privileged account.SQL Server Logins,Users and RolesThe sa account has a strong password.SQL Server guest accounts are removed from non-system databases.The BUILTIN\Administrators group is removed from the SQL Server logins.The sysadmin role does not contain the BUILTIN\Administrators group.Permissions are not granted for the public role.The sysadmin role contains no more than two users.Restricted (granular) database permissions are granted (Built-in, non-granularroles such as db_datareader and db_datawriter are avoided)Default permissions for SQL Server objects are not changed.SQL Server DatabaseObjectsAll sample databases are removed from the server.Stored procedures are secured.Extended stored procedures are secured.cmdExec is restricted to the sysadmin role only.
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Contents xxvii.NET Remoting Securit
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Contents xxxiiiSummary ............
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Contents xxxvIndex of Checklists 68
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Contents xliRestricting Server-to-S
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ForewordsForeword by Mark CurpheyWh
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Part IIntroduction to Threats andCo
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3Threat ModelingIn This Chapter●
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8Code Access Security in PracticeIn
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Part IVSecuring Your Network,Host,
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