Without a security policy, the availability of your network can be compromised. The policy begins with assessing the risk to the network and building a team to respond. Continuation of the policy requires implementing a security change management practice and monitoring . This is part one of a two-part security series on DaemonNews.
Part one describes security in general terms.
Part two will drill down into specific strategies for securing common services. The funny thing about security is that we actually have quite a lot of it in the UNIX paradigm. We have users, groups, chroot, secure levels, and jails. The only problem is that we don't use any of it by default. . . . This chapter talks about the lockdown procedures of a freebsd machine.