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本机FPolicy文件阻止

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ontap-9
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nas
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适用场景

ONTAP 9

问题解答

概述

某些管理员希望具有不允许将某些文件类型存储在文件服务器上的策略。这些文件类型可以是音乐、视频或其他此类文件类型。此类文件的扫描基于
以下两种方式之一:基于文件扩展名( Data ONTAP 中的本机支持)—例如,阻止所有匹配 *.mp3 的文件。这是一种快速但不太可靠的方法。它不需要对文件进行数据访问。基于文件扩展名的文件阻止的本机支持不需要连接到任何外部 FPolicy 服务器。

基于 File Magic 签名(需要外部服务器)—例如,使用 Magic 和签名匹配 MP3 格式来阻止所有文件。这种速度较慢,因为 FPolicy 服务器需要访问文件中的数据。这一点在签名匹配过程中更加准确、类似于防病毒扫描程序检测病毒的功能。

有关详细信息,请参见以下链接:

ONTAP 9 的 FPolicy 文件阻止

管理员为创建、打开、关闭和重命名请求启用事件。当 FPolicy 服务器收到有关这些事件触发器的通知时、它可以基于两种机制(文件扩展名或文件签名)运行检查、如果找到匹配项则拒绝请求。

配置示例

执行以下步骤配置本机 FPolicy 。

  1. 配置策略事件:

Cluster::> vserver fpolicy policy event create -vserver SvmName -event-name Event -protocol cifs -file-operations create,open,rename
 

Cluster::> vserver fpolicy policy event show -vserver SvmName -event-name Event -instance
                     Vserver: SvmName
                       Event: Event
                    Protocol: cifs
                 File Operations: create, open, rename
                     Filters: -
          Is Volume Operation Required: false

  1. 配置策略:

Cluster::> vserver fpolicy policy create -vserver SvmName -policy-name blockext -events Event -engine native -is-mandatory true -allow-privileged-access no -is-passthrough-read-enabled false
 

Cluster::> vserver fpolicy policy show -vserver SvmName -instance 
                                  Vserver: SvmName
                                 Policy: blockext
                       Events to Monitor: Event
                          FPolicy Engine: native
              Is Mandatory Screening Required: true
                   Allow Privileged Access: no
               User Name for Privileged Access: -
                 Is Passthrough Read Enabled: false
                   Configure Policy Scope:

Cluster::> vserver fpolicy policy scope create -vserver SvmName -policy-name blockext -file-extensions-to-include mp3,mp4,flv,wmv -shares-to-include "*" -is-file-extension-check-on-directories-enabled true
 

Cluster::> vserver fpolicy policy scope show -vserver SvmName -instance
                                        Vserver: SvmName
                            Policy: blockext
                              Shares to Include: *
                              Shares to Exclude: -
                             Volumes to Include: -
                             Volumes to Exclude: -
                     Export Policies to Include: -
                     Export Policies to Exclude: -
                     File Extensions to Include: mp3, mp4, flv, wmv
                    File Extensions to Exclude: -
  Is File Extension Check on Directories Enabled: true

  1. 启用策略:

Cluster::> vserver fpolicy enable -vserver SvmName -policy-name blockext -sequence-number 1

Cluster::> vserver fpolicy show -vserver SvmName
                      Sequence
Vserver  Policy Name  Number    Status  Engine
-------  -----------  --------  ------  ------
SvmName  blockext     1         on      native

Cluster::> event log show -time > 2m
Time                Node         Severity      Event
------------------- ------------ ------------- --------------------------
3/27/2017 10:35:34  cm2520n2-ams INFORMATIONAL mgmt.fpolicy.policy.enabled: FPolicy policy blockext is enabled on Vserver SvmName.

  1. 从 Windows 客户端使用上述策略测试结果:

Attempt to rename a file using mp3, mp4, flv, or wmv extension is Denied
Attempt to open a file with mp3, mp4, flv, or wmv extension is Denied
Attempt to delete a file with mp3, mp4, flv, or wmv extension is Denied
Attempt to copy a file with mp3, mp4, flv, or wmv extension to the share is Denied

 
有关更多信息、请参见适用于您的 ONTAP 版本的《 CIFS 和 NFS 审核指南》。

 

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