ANSSI-BP-028 (intermediary)
Rules and Groups employed by this XCCDF Profile
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Set Kernel Parameter to Increase Local Port Range
To set the runtime status of the <code>net.ipv4.ip_local_port_range</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.i...Rule Medium Severity -
Enable Kernel Parameter to Use TCP RFC 1337 on IPv4 Interfaces
To set the runtime status of the <code>net.ipv4.tcp_rfc1337</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv4.tcp_...Rule Medium Severity -
Enable Kernel Parameter to Use TCP Syncookies on Network Interfaces
To set the runtime status of the <code>net.ipv4.tcp_syncookies</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv4.t...Rule Medium Severity -
Disable Kernel Parameter for Sending ICMP Redirects on all IPv4 Interfaces
To set the runtime status of the <code>net.ipv4.conf.all.send_redirects</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w n...Rule Medium Severity -
Disable Kernel Parameter for Sending ICMP Redirects on all IPv4 Interfaces by Default
To set the runtime status of the <code>net.ipv4.conf.default.send_redirects</code> kernel parameter, run the following command: <pre>$ sudo sysctl ...Rule Medium Severity -
Disable Kernel Parameter for IP Forwarding on IPv4 Interfaces
To set the runtime status of the <code>net.ipv4.ip_forward</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv4.ip_fo...Rule Medium Severity -
Verify Group Who Owns /etc/nftables Directory
To properly set the group owner of/etc/nftables, run the command:$ sudo chgrp root /etc/nftables
Rule Medium Severity -
Verify User Who Owns /etc/nftables Directory
To properly set the owner of/etc/nftables, run the command:$ sudo chown root /etc/nftables
Rule Medium Severity -
Verify Permissions On /etc/nftables Directory
To properly set the permissions of/etc/nftables, run the command:$ sudo chmod 0700 /etc/nftables
Rule Medium Severity -
Ensure All World-Writable Directories Are Owned by root User
All directories in local partitions which are world-writable should be owned by root. If any world-writable directories are not owned by root, this...Rule Medium Severity -
Verify that system commands directories have root as a group owner
System commands are stored in the following directories: by default: <pre>/bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin </pre> ...Rule Medium Severity -
Verify that system commands directories have root ownership
System commands are stored in the following directories by default: <pre>/bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin </pre> A...Rule Medium Severity -
Verify Group Who Owns /etc/crypttab File
To properly set the group owner of/etc/crypttab, run the command:$ sudo chgrp root /etc/crypttab
Rule Medium Severity -
Verify User Who Owns /etc/crypttab File
To properly set the owner of/etc/crypttab, run the command:$ sudo chown root /etc/crypttab
Rule Medium Severity -
Verify Permissions On /etc/crypttab File
To properly set the permissions of/etc/crypttab, run the command:$ sudo chmod 0600 /etc/crypttab
Rule Medium Severity -
Ensure All Files Are Owned by a Group
If any file is not group-owned by a group present in /etc/group, the cause of the lack of group-ownership must be investigated. Following this, tho...Rule Medium Severity -
Ensure All Files Are Owned by a User
If any files are not owned by a user, then the cause of their lack of ownership should be investigated. Following this, the files should be deleted...Rule Medium Severity -
Enable Kernel Parameter to Enforce DAC on FIFOs
To set the runtime status of the <code>fs.protected_fifos</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w fs.protected_fi...Rule Medium Severity -
Enable Kernel Parameter to Enforce DAC on Regular files
To set the runtime status of the <code>fs.protected_regular</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w fs.protected_...Rule Medium Severity -
Verify Group Who Owns /etc/shells File
To properly set the group owner of/etc/shells, run the command:$ sudo chgrp root /etc/shells
Rule Medium Severity
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