白名單禁止進程呼叫系統指令-常見問題-PHP中文網

本文討論如何將呼叫系統指令的禁止程序列入白名單。將禁止的進程列入白名單有助於防止未經授權存取敏感系統命令，從而減少安全漏洞和資料外洩。本文提供了

白名單禁止進程呼叫系統指令

白名單禁止呼叫系統指令的進程

如何將禁止呼叫系統指令的進程列入白名單？

要將禁止呼叫系統命令的進程列入白名單，可以使用auditd 工具建立允許特定進程執行某些命令的規則。具體操作方法如下：auditdtool to create a rule that allows specific processes to execute certain commands. Here's how you can do it:


       
        Create a rule file:Create a file called/etc/audit/rules.d/whitelist.ruleswith the following content:
       
       
        -w /usr/bin/command -p x -c never
        
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       In this rule,/usr/bin/commandis the command that you want to whitelist,-p xspecifies that the rule applies to processes with executable permission, and-c neverspecifies that the rule should never be enforced. You can add multiple rules to the file, each on a separate line.
       
        Load the rules:Load the rules file into theauditdsystem by running the following command:
       
       
        sudo auditctl -R /etc/audit/rules.d/whitelist.rules
        
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        Restartauditd:To ensure that the rules are applied immediately, restartauditdby running:
       
       
        sudo systemctl restart auditd
        
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       What are the benefits of whitelisting forbidden processes?
       Whitelisting forbidden processes can help prevent unauthorized access to sensitive system commands. By restricting the ability of certain processes to execute specific commands, you can reduce the risk of security breaches and data leaks.
       What are some examples of forbidden processes?
       Forbidden processes are typically processes that are not essential for the operation of the system and that could be used to compromise the system if they were allowed to execute certain commands. Examples of forbidden processes include:
       
        Processes that have excessive file permissions
        Processes that are running with root privileges
        Processes that are known to be vulnerable to exploits
       
       How can I audit forbidden processes?
       You can audit forbidden processes by using theauditctltool. To do this, run the following command:
       
        sudo auditctl -w /usr/bin/command -p x -c id
        
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       This command will create an audit rule that logs all attempts by processes with executable permission to execute the/usr/bin/command
       
        建立規則檔案：建立一個名為/etc/audit/rules.d/whitelist.rules的文件，其中包含以下內容：
       
       
        sudo cat /var/log/audit/audit.log | grep /usr/bin/command
        
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       此規則中，
       /usr/bin/command是您要加入白名單的命令，
       -p x指定該規則適用於具有可執行權限的進程，並且
       -c never指定永遠不應該強制執行該規則。您可以為文件新增多個規則，每個規則在單獨的行上。
       
        載入規則：透過執行將規則檔案載入到auditd系統中下列指令：
       rrreee
       
        重新啟動auditd： 若要確保立即套用規則，請重新啟動auditd透過執行：
       rrreee 將禁止的進程列入白名單有什麼好處？ 將禁止的進程列入白名單可以幫助防止未經授權存取敏感系統命令。透過限制某些進程執行特定命令的能力，可以降低安全漏洞和資料外洩的風險。 禁止進程的範例有哪些？ 禁止進程通常是對於操作來說不是必需的進程如果允許他們執行某些命令，則可能會被用來危害系統。禁止進程的範例包括：
       
        具有過多檔案權限的進程
        以root 權限運行的進程
        已知容易受到攻擊的進程
       如何審核禁止的進程？ 您可以使用
       auditctl工具審核禁止的進程。為此，請執行以下命令：rrreee此命令將建立一個審核規則，記錄具有可執行權限的進程執行
       /usr/bin/command命令的所有嘗試。您可以透過執行以下命令來查看審核日誌：rrreee
       以上是白名單禁止進程呼叫系統指令的詳細內容。更多資訊請關注PHP中文網其他相關文章！