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These are tools for reporting and alerting about security information and events on linux systems. The focus is on gathering and annotating authentication, authorization and system configuration information and reporting and alerting based on this information.
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Overview of tools
sec-gather-iptables: Output firewall rules
sec-gather-listenports: Output listening services / ports
sec-gather-misconfigs: Scan for common security misconfigurations
sec-gather-mysqlusers: Output MySQL users and privileges
sec-gather-openvpnusers: Output OpenVPN client certificate status
sec-gather-portscan: Output open ports detected through a portscan of a host
sec-gather-unixgroups: Output unix groups and their members
sec-gather-unixsessions: Output info on login sessions
sec-gather-unixusers: Output unix users and their details
sec-gather-http-headers: Output HTTP security headers for URLs
sec-gather-sslscan: Output SSL / TLS protocol and ciphers for ports
sec-gather-perms: Output files and dirs with dangerous permissions
sec-diff: Output changes in sec-gather-* script output since last time
sec-report: Generate HTML and PDF reports from gathered info
sec-mail: Send alerts and reports.