Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Hardening Linux

This book is badly dated.Worse it shows configs for new to Linux administrators and leaves the harder configurations missing time after time. No SELinux just cron, SSH, password and file permissions utilities.Fortunately I brought both the Linux Troubleshooting Bible and the Network Security Bible. I recommend both for those starting Linux security administration.(...)Center for Internet SecurityValdez LaddCCNA, CIW-SP, CCSA, CWNA, I-NET+