Adriano Dos Santos Gregório is an expert in the field of operating systems, he is curious about new technologies and is passionate about mobile technologies. He has been a Unix administrator since 1999 and he focuses primarily on networking projects with an emphasis on the physical and logical security of various network environments and databases. He has also reviewed some other Packt Publishing books such as Kali Linux Cookbook and Kali Linux CTF Blueprints.

He is a Microsoft Certified MCSA and MCT Alumni.

Jitesh Marathe is an IT professional with a bachelor's degree in computer application. He has spent most of his career being a system administrator at various IT companies and he specializes in System and Applications Operations and Support. Jitesh enjoys traveling to new places with his family.

He has also reviewed Linux Utilities Cookbook, Packt Publishing.

Sabir Mustafa has more than 13 years of work experience in the field of ICT and information technology, which includes:

He is currently working as the project lead in a US-based multinational firm, Royal Cyber Inc. His expertise profile includes cloud services, Linux, JBoss Middleware, Windows Servers, and IBM Middleware.

Besides that, he holds a postgraduate degree in MCS (Master in Computer Science) and he is also multi-certified in industry recognized technologies including RHCE, MCSA, and Oracle Enterprise Linux. His hardware expertise includes DELL, HP Server Hardware, and EMC Storage. As a trainer, he has also launched a video training series on RHCSA at http://urduitacademy.com/.

He has a strong background in IT implementation in the government sector as well, which includes security policies, centralized SSH authentication using LDAP, data center deployment plans, and SAN storage.

Davor Lozić is a senior software engineer interested in various subjects, especially computer security, algorithms, and data structures. He creates web applications in CakePHP and Ext JS. In his spare time, he loves to read books about modern physics, graph databases such as OrientDB, and other related subjects. You can visit his website at http://warriorkitty.com and contact him from there. He likes cats! If you want to talk about any aspect of technology or if you have funny pictures of cats, feel free to contact him.

Mosudi Isiaka is a graduate in electrical and computer engineering from Federal University of Technology, Minna, Niger State, Nigeria. He has demonstrated excellent skills in numerous aspects of Information and Communication Technology. He has very good experience in Local Area Network implementation and management, from a simple network to a mid-level complex network scenario of more than a thousand workstations (Microsoft Windows 7, Microsoft Windows Vista, and Microsoft Windows XP), with Microsoft Windows 2008 Server R2 Active Directory Domain Controllers deployed in more than a single location. He has set up data center infrastructure, VPN, WAN link optimization, a firewall and intrusion detection system, a web/e-mail hosting control panel, an OpenNMS network management application and so on.

He can use open source software and applications to achieve enterprise level network management solutions in scenarios that cover Virtual Private Network (VPN), IP PBX, cloud computing, clustering, virtualization, routing, high availability, customized firewall with advanced web filtering, network load balancing, failover and link aggregation for multiple Internet access solutions, traffic engineering, collaboration suits, Network Attached Storage (NAS), Linux systems administration, virtual networking, and computing.

He is currently employed as a data center manager at One Network Ltd., Nigeria. Mosudi also works with ServerAfrica (http://www.serverafrica.com) as a managing consultant (technical). More information about him is available on his website http://www.mioemi.com. Contact him at http://ng.linkedin.com/pub/isiaka-mosudi/1b/7a2/936/.

He has also reviewed Mastering Python High Performance by Fernando Doglio for Packt Publishing.