Guide to the Secure Configuration of Alibaba Cloud Linux 3
Rules, Groups, and Values defined within the XCCDF Benchmark
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Limit Users Allowed FTP Access if Necessary
If there is a mission-critical reason for users to access their accounts via the insecure FTP protocol, limit the set of users who are allowed this...Rule Unknown Severity -
Use vsftpd to Provide FTP Service if Necessary
If your use-case requires FTP service, install and set-up vsftpd to provide it.Group -
Web Server
The web server is responsible for providing access to content via the HTTP protocol. Web servers represent a significant security risk because: <br...Group -
Disable Apache if Possible
If Apache was installed and activated, but the system does not need to act as a web server, then it should be disabled and removed from the system.Group -
Disable NGINX if Possible
If NGINX was installed and activated, but the system does not need to act as a web server, then it should be removed from the system.Group -
Install Apache if Necessary
If <code>httpd</code> was not installed and activated, but the system needs to act as a web server, then it should be installed on the system. Foll...Group -
Confirm Minimal Built-in Modules Installed
The default <code>httpd</code> installation minimizes the number of modules that are compiled directly into the binary (<code>core prefork http_cor...Group -
Secure Apache Configuration
The <code>httpd</code> configuration file is <code>/etc/httpd/conf/httpd.conf</code>. Apply the recommendations in the remainder of this section to...Group -
HTTPD Log Level
The setting for LogLevel in /etc/httpd/conf/httpd.confValue -
Maximum KeepAlive Requests for HTTPD
The setting for MaxKeepAliveRequests in httpd.confValue -
Configure Operating System to Protect Web Server
The following configuration steps should be taken on the system which hosts the web server, in order to provide as safe an environment as possible ...Group -
Run httpd in a chroot Jail if Practical
Running <code>httpd</code> inside a <code>chroot</code> jail is designed to isolate the web server process to a small section of the filesystem, li...Group -
Restrict File and Directory Access
Minimize access to criticalhttpd
files and directories.Group -
Configure PERL Securely
PERL (Practical Extraction and Report Language) is an interpreted language optimized for scanning arbitrary text files, extracting information from...Group -
Configure PHP Securely
PHP is a widely-used and often misconfigured server-side scripting language. It should be used with caution, but configured appropriately when need...Group -
Directory Restrictions
The Directory tags in the web server configuration file allow finer grained access control for a specified directory. All web directories should be...Group -
Minimize Web Server Loadable Modules
A default installation of <code>httpd</code> includes a plethora of dynamically shared objects (DSO) that are loaded at run-time. Unlike the aforem...Group -
httpd Core Modules
These modules comprise a basic subset of modules that are likely needed for base <code>httpd</code> functionality; ensure they are not commented ou...Group -
Minimize Modules for HTTP Basic Authentication
The following modules are necessary if this web server will provide content that will be restricted by a password. <br><br> Authentication can be p...Group -
Minimize Configuration Files Included
The <code>Include</code> directive directs <code>httpd</code> to load supplementary configuration files from a provided path. The default configura...Group
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