Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good Reference Book

'Configuring Check Point NGX VPN-1/Firewall-1' by Robert Stephens is another good book by Syngress for IT Professionals. Syngress has really focussed on IT setup and configuration for it's latest releases of books and they have done a solid job. Packing over 600 pages of material into this guide, if you use Checkpoint at your job, you would be wise to pick up a copy of this book for your desk at work.***** RECOMMENDED