Log Collection, OpenVPN, and iptables
This chapter covers three topics related to security: log collection, virtual private networks (VPNs), and firewalls. Log collection and analysis is an integral part of an effective infrastructure support strategy. OpenVPN enables secure VPNs and iptables is a fast and powerful firewall built into Linux.
Why Collect Logs?
Log management is a crucial component of infrastructure engineering. Logs are generated from numerous sources, such as applications, operating systems, networks, system devices, and services. Logs can be useful for the following: