19ADVANCED SECURITY FEATURES
FreeBSD includes a variety of tools for securing network traffic and users. Some of these tools are invisible to sysadmins but work behind the scenes to increase security, such as the sandboxing API capsicum(4). Packet filtering lets you control who can access your system. You can also use blacklisting to block network addresses that keep poking at your host. In addition, FreeBSD has a whole bunch of optional security features you can enable either in the installation process or later. In this chapter, we’ll examine these tools and techniques, look at monitoring your system’s security, and discuss how to react if you ...
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