Configure Audit Rules for Privilege-Escalated Commands

Users can call privilege-escalated commands that is, commands with SUID/SGID bits to obtain the super administrator permissions. This operation is risky and often exploited by attackers. You are advised to audit and monitor privilege-escalated commands for future tracing. By default, audit rules...

Do Not Install Network Sniffing Tools

If network sniffing tools exist in the production environment, attackers may use them for network analysis and attacks. Therefore, in the production environment, do not install network sniffing, packet capturing, or analysis tools, such as tcpdump, Ethereal, and Wireshark. SPDX-FileCopyrightText:...

Ensure That Partitions without Executable Files Are Mounted Using noexec

A data drive only stores data generated during service running. No command is executed in the data drive. Therefore, you can mount the drive or partition using noexec to improve security and reduce the attack surface. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be...

Configure Audit Rules for File System Mounting

Generally, for deployed services, the file system mounting does not change. Therefore, any change in the file system mounting may indicate attacks. For file systems with changes in mounting, audit and monitor their mounting conditions for tracing. By default, audit rules for file system mounting...

Avoid the .forward File in the Home Directory

An email address can be configured in the .forward file. When a user receives an email, the email is automatically forwarded to the email address. If there are no email forwarding scenarios, you are advised to delete the .forward file. If the .forward file exists, emails containing sensitive...

Correctly Configure the Log Records of Each Service

Logs should be configured so that important system behaviors and security-related information are recorded by rsyslog. The configuration files /etc/rsyslog.conf and /etc/rsyslog.d/.conf specify the rules for logging and the files for recording specific types of logs. If logging is not configured,...