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CIS Ubuntu 22.04 Level 1 Server Benchmark

Rules and Groups employed by this XCCDF Profile

  • nftables

    <code>If firewalld or iptables are being used in your environment, please follow the guidance in their respective section and pass-over the guidanc...
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  • Install nftables Package

    nftables provides a new in-kernel packet classification framework that is based on a network-specific Virtual Machine (VM) and a new nft userspace ...
    Rule Medium Severity
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  • Verify nftables Service is Enabled

    The nftables service allows for the loading of nftables rulesets during boot, or starting on the nftables service The <code>nftables</code> servic...
    Rule Medium Severity
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  • Ensure nftables Default Deny Firewall Policy

    Base chain policy is the default verdict that will be applied to packets reaching the end of the chain. There are two policies: accept (Default) an...
    Rule Medium Severity
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  • Ensure nftables Rules are Permanent

    nftables is a subsystem of the Linux kernel providing filtering and classification of network packets/datagrams/frames. The nftables service reads ...
    Rule Medium Severity
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  • Ensure Base Chains Exist for Nftables

    Tables in nftables hold chains. Each table only has one address family and only applies to packets of this family. Tables can have one of six famil...
    Rule Medium Severity
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  • Set nftables Configuration for Loopback Traffic

    Configure the loopback interface to accept traffic. Configure all other interfaces to deny traffic to the loopback network.
    Rule Medium Severity
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  • Ensure a Table Exists for Nftables

    Tables in nftables hold chains. Each table only has one address family and only applies to packets of this family. Tables can have one of six famil...
    Rule Medium Severity
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  • Uncomplicated Firewall (ufw)

    The Linux kernel in Ubuntu provides a packet filtering system called netfilter, and the traditional interface for manipulating netfilter are the ip...
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  • Remove ufw Package

    The ufw package can be removed with the following command: 
    $ apt-get remove ufw
    Rule Medium Severity
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  • Verify ufw Enabled

    The ufw service can be enabled with the following command: 
    $ sudo systemctl enable ufw.service
    Rule Medium Severity
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  • Ensure ufw Default Deny Firewall Policy

    A default deny policy on connections ensures that any unconfigured network usage will be rejected. Note: Any port or protocol without a explicit a...
    Rule Medium Severity
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  • Set UFW Loopback Traffic

    Configure the loopback interface to accept traffic. Configure all other interfaces to deny traffic to the loopback network.
    Rule Medium Severity
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  • Ensure ufw Firewall Rules Exist for All Open Ports

    Any ports that have been opened on non-loopback addresses need firewall rules to govern traffic.
    Rule Medium Severity
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  • Wireless Networking

    Wireless networking, such as 802.11 (WiFi) and Bluetooth, can present a security risk to sensitive or classified systems and networks. Wireless net...
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  • Disable Wireless Through Software Configuration

    If it is impossible to remove the wireless hardware from the device in question, disable as much of it as possible through software. The following ...
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  • Deactivate Wireless Network Interfaces

    Deactivating wireless network interfaces should prevent normal usage of the wireless capability. <br><br> Configure the system to disable all wire...
    Rule Medium Severity
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  • File Permissions and Masks

    Traditional Unix security relies heavily on file and directory permissions to prevent unauthorized users from reading or modifying files to which t...
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  • Verify Permissions on Important Files and Directories

    Permissions for many files on a system must be set restrictively to ensure sensitive information is properly protected. This section discusses impo...
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  • Verify Permissions on /etc/audit/auditd.conf

    To properly set the permissions of /etc/audit/auditd.conf, run the command: 
    $ sudo chmod 0640 /etc/audit/auditd.conf
    Rule Medium Severity
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Node 2

siemur/test-space

The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

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