This chapter covers the following requirements for Novell’s Certified Linux Engineer (CLE) 9 certification:
1. Configure Linux host security.
2. Configure cryptography.
3. Configure Linux network security.
4. Detect intruders.
In today’s networking world, security has become a huge issue. As a network administrator, it is your job to ensure that your network stays secure—especially your network servers.
In the early days of networking, we didn’t worry all that much about security issues. Yes, the concern was always there, lurking in the back of our minds. However, break-ins were relatively rare. Our complacency was born of the fact that most networks back then were relatively small and usually isolated. ...