Windows Server 2003 Recommended Baseline Security

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Unclassified ITSG for Windows Server 2003 4.4.3.41 Network access: Do not allow anonymous enumeration of SAM accounts machine\system\currentcontrolset\control\lsa\restrictanonymoussam=4, 1 The ‘restrictanonymoussam’ registry value determines if anonymous enumeration of SAM accounts is permitted. The setting ‘1’disallows anonymous enumeration of SAM accounts. The enumeration maps account names to a corresponding SID. When the SID is known, local Guest and Administrator accounts are exposed. Once identified, they are open to password guessing attacks. 4.4.3.42 Network access: Do not allow anonymous enumeration of SAM accounts and shares machine\system\currentcontrolset\control\lsa\restrictanonymous=4, 1 The ‘restrictanonymous’ registry value determines if anonymous enumeration of SAM accounts and shares is permitted. The setting ‘1’ disallows anonymous enumeration of SAM accounts and shares. The enumeration maps account names to a corresponding SID. When the SID is known, local Guest and Administrator accounts are exposed. Once identified, they are open to password guessing attacks. 4.4.3.43 Network access: Do not allow storage of credentials or .NET Passports for network authentication machine\system\currentcontrolset\control\lsa\disabledomaincreds=4, 1 The ‘disabledomaincreds’ registry value determines if passwords, credentials or Microsoft .NET passports are saved after initial domain authentication. The setting ‘1’ does not perform the save. 4.4.3.44 Network access: Let Everyone permissions apply to anonymous users machine\system\currentcontrolset\control\lsa\everyoneincludesanonymous=4, 0 The ‘everyoneincludesanonymous’ value determines what additional permissions are granted for anonymous connections to a computer. The setting ‘0’ grants no additional permissions to anonymous users. This ensures unauthenticated users do not inherit the rights of the ‘everyone’ group. 4.4.3.45 Network access: Named Pipes that can be accessed anonymously machine\system\currentcontrolset\services\lanmanserver\parameters\nullsessionpipes=7, The ‘nullsessionpipes’ value defines anonymous access to named pipes. The empty setting disallows anonymous access to named pipes. This ensures all system access is authorized. 64 March 2004 Server Policy Files
Windows Server 2003 Recommended Baseline Security (ITSG-20) 4.4.3.46 Network access: Remotely accessible registry paths machine\system\currentcontrolset\control\securepipeservers\winreg\allowedexactpaths\machi ne=7, The ‘allowedexactpaths\machine’ registry value defines which registry paths can be accessed over the network. This Baseline configuration has no requirement for remotely accessible registry information. 4.4.3.47 Network access: Remotely accessible registry paths and Sub-paths machine\system\currentcontrolset\control\securepipeservers\winreg\allowedpaths\machine=7, The ‘allowedpaths\machine’ registry value defines registry paths and sub-paths that can be accessed over the network. This Baseline configuration has no requirement for remotely accessible registry information. 4.4.3.48 Network access: Restrict anonymous access to Named Pipes and Shares machine\system\currentcontrolset\services\lanmanserver\parameters\restrictnullsessaccess=4, 1 The ‘restrictnullsessaccess’ registry value determines if anonymous access is allowed to named pipes and shares. The setting ‘1’ disallows anonymous access to named pipes and shares. Access to resources is predicated on authorization for that resource. If anonymous access is granted, there would be no ability to identify who is accessing the objects. 4.4.3.49 Network access: Shares that can be accessed anonymously machine\system\currentcontrolset\services\lanmanserver\parameters\nullsessionshares=7, The ‘nullsessionshares’ registry value defines which shares can be accessed anonymously over the network. The empty setting disallows anonymous access to any share. All system access should be authorized. Anonymous access prevents accurate authorization of shares. 4.4.3.50 Network access: Sharing and security model for local accounts machine\system\currentcontrolset\control\lsa\forceguest=4, 0 The ‘forceguest’ registry value determines the sharing and security model for local accounts. The setting ‘0’ requires user authentication to access resources. This allows individual access to be audited. Server Policy Files March 2004 65
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Windows Server 2003 Recommended Baseline Security

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