927 Courses in London

CWAP training course description This WiFi analysis course consists of hands-on learning using the latest enterprise wireless LAN analysis and troubleshooting tools. The course takes an in-depth look at the functionality of WLANs, intended operation of the 802.11 protocol and Wi-Fi Alliance specifications, WLAN frame formatting and structure, troubleshooting methodology, and protocol analysis. It also includes extensive training in modern spectrum analysis with a focus on advanced RF behaviour analysis, data collection methods, interpreting spectrum plots and charts, and understanding advanced features of WLAN spectrum analysers. What will you learn Analyse WiFi frames using Wireshark. Explain 802.11 protocol operation. Troubleshoot WiFi networks using Wireshark. Troubleshoot WiFi networks using spectrum analysers. CWAP training course details Who will benefit: Technical Network Staff Anyone looking to become a CWAP Prerequisites: Certified Wireless Network Administrator Duration 4 days CWAP training course contents Principles of WLAN Communication 802.11 Working Group, OSI reference model and the 802.11 PHY and MAC, Communication sublayers and data units, WLAN architecture components, Organization of station forwarding Addressing and internetworking operation, Modern WLAN product architectures. Physical (PHY) and MAC Layer Formats and Technologies Physical layer functions, Preamble function and format, Header purpose and structure, Analysis of PHY problems, Physical PPDU formats, 802.11b, 802.11a, 802.11g, 802.11n, MAC frame components, MAC encapsulation, Fields and subfields of the MAC header, Frame Control, Frame types and subtypes and their uses, Addressing, Frame body, Data frame format, Control frame format, Management frame format, Information elements and fields. Beaconing and synchronization Scanning, Client state machine, 802.11 contention, QoS, Admission control, Band steering and airtime fairness mechanisms Fragmentation, Acknowledgments and Block acknowledgments, Protection mechanisms and backward compatibility, Power management, Dynamic Frequency Selection (DFS) and Transmit Power Control (TPC), Security components, methods, and exchanges, Roaming procedures exchanges, Future protocol enhancements. 802.11n Transmit beamforming, Spatial multiplexing, Maximal Ratio Combining (MRC), Space-Time Block Coding, 40 MHz channels, Frame aggregation, HT-OFDM format, Modulation and Coding Schemes (MCS), HT frame formatting and more. Protocol Analysis Tools and Methodology Troubleshooting methodology, Protocol analyser types, Analysis NIC/adapter selection and constraints, Interpreting results based on location, Analyzer settings and features, Filtering and channel scanning, Interpreting decodes, Using advanced analysis features, Assessing WLAN health and behaviour factors, Evaluating network statistics, Troubleshooting common problems, Wired analysis to support wireless network issues. Spectrum Analysis Tools and Methodology Radio frequency behaviour review, Visualizing RF domains using spectrum measurement tools, Spectrum analyser types and operation, Analyser specifications and characteristics, Understanding spectrum data presentation, Interpreting plots and charts, Common WLAN spectrum analyser features, Identifying transmit patterns, Device classification and network impact, Recognizing transmit signatures. Hands on lab exercises Wireshark Setup, Use, and In-Depth Analysis Wireshark is fundamental to troubleshooting. Labs include: - Capabilities, configuration, and data display - Opening, collecting, saving, and modifying capture files. - Filtering traffic, and using colouring rules as analysis aides. - Live captures based on a set of desired collection criteria. - Identify and isolate network problems. - Conversation analysis. - Remote packet capture with an AP. Understanding Frame Components Familiarity with the frame structure and contents is essential in real -world troubleshooting efforts. Labs include: - Understanding the MAC header - Comparing the three major frame types and their subtypes - Analysing frame formats of individual frame types - Analysing 802.11n frame components - Additional information is reported by protocol analysers - Information not visible in protocol analysers Frame Exchanges Understanding frame exchange rules and behaviors is critical to identifying expected and unexpected. It is also necessary to understand what is normal so that aberrations can be properly troubleshot. Labs include: - Connectivity exchanges and sequences - Legacy and modern security exchanges - ERP and HT protection mechanisms - Power save behaviour - Acknowledgments, block acknowledgments, and supporting action frames - Dynamic rate switching - Band steering Troubleshooting Common Problems This lab exposes students to hands-on troubleshooting skills by setting up common problems in WLANs and allowing students to attempt to solve them. - Trouleshooting connectivity exchanges - Troubleshooting 802.1X and EAP exchanges - Troubleshooting roaming Spectrum Analyzer Setup, Use, and In-Depth Analysis Specifically, it will explore the plots and charts used to display spectrum data and how to interpret this data to define a transmitter's impact on the network. The following are covered: - Installing the analyser and using display and navigation - The 'RF perspective' provided by each plot and chart - Using built-in features and automated device identification - Characterizing the behaviours of an interference source - Assessing the impact of an interference source - Determining the impact of transmitter proximity on interference. - Identifying signatures of common transmitters - Remote spectrum analysis with an AP

SIP training course description A hands on course covering IP telephony with SIP. The course starts with a brief review of knowledge students should already possess including RTP and RTCP. The main focus is on SIP though, progressing from what SIP is through SIP signalling, call processing and architectures, moving onto more advanced issues including security, multimedia, and interoperability. Hands-on practicals follow each major theory session. What will you learn Explain how SIP works. Analyse SIP packets. Deploy SIP IP telephony solutions. Integrate SIP with other telephony solutions. SIP training course details Who will benefit: Technical staff working with SIP. Prerequisites: Definitive VoIP for engineers Duration 3 days SIP training course contents VoIP review What is VoIP? Brief review of IP, Brief review of telephones and voice. RTP, RTCP, mixers and translators. Hands on Analysing RTP packets. What is SIP? Why SIP? SIP history, SIP standards, SIP capabilities, key services, how SIP works, and a basic SIP call. Hands on Peer to peer SIP. SIP messages SIP sessions, SIP flows, Message structure, INVITE, ACK, BYE, CANCEL, OPTIONS, REGISTER. Extension methods. Response codes. SIP call flows. Hands on Analysing SIP packets. SIP architectures UA client, UA server, Proxy servers, Redirect servers, registrars. SIP phones, gateways, application servers, and other products. Stateful and stateless servers. Various call scenarios. Hands on SIP proxies. SIP addressing URLs, SIP addresses, registration, Location and Directory servers. Address tracking. Hands on SIP and DNS. Supplementary services SIP signalling, signalling compression, Call hold, Call forwarding, Home and away scenarios, transfers, conferences, call control. Hands on Analysing SIP supplementary services. SDP What is SDP? Multimedia, multimedia session announcement, invitation and others. Relationship with SIP. Hands on Video conferencing with SIP. SIP security Access control, Authentication, encryption, firewalls. Hands on SIP authentication. Interoperability Inter working with PSTN, ISUP to SIP mapping, SIP and 3G, SIP-T, SIP and SIGTRAN. SIP and H323. Hands on SIP and gateways. SIP mobility Terminal mobility, service mobility, personal mobility, Mobile IP, SIP signalling flows in 3G.

LINX 3 training course description A detailed study of BGP, from the basics of how it works through to advanced issues such as route reflectors, policy, filtering, route selection and routing registries. The course culminates with a study of an industrial strength BGP template illustrating important issues such as bogon filtering. Practical hands on with routers follow the major sessions to reinforce the theory. A multiple choice exam, leading to the LAIT III certification, is available after the course. The exam consists of 60 questions and lasts 2 hours. What will you learn Connect enterprises to the Internet, and ISPs to each other. Describe how BGP works. List, describe and configure the main BGP attributes. Implement and troubleshoot BGP. Work with route aggregation and calculate CIDR prefixes in seconds. Influence traffic paths with BGP. LINX 3 training course details Who will benefit: Network engineers. Prerequisites: LAIT I and II OR CCNP and take LAIT I and LAIT II exams whilst on this course. Duration 5 days LINX 3 training course contents Basic BGP IGPs, EGPs, What's BGP? BGP RIB, in/out process, tables peers, adding routes. Hands on Simple configuration and troubleshooting. The Internet and peering ASs, AS numbers, Internet structure, ISP types, ISP network design, IXs, peering vs. transit, public/ private peering, bi/multi-lateral peering. Hands on AS information gathering. How BGP works Incremental updates, Path vector protocols, BGP protocol stack, the BGP header, message types, NLRI, withdrawn routes, route refresh, route dampening. Hands on More troubleshooting, packet analysis. MBGP and IPv6 Multiprotocol routing, AFI, SAFI, MBGP and multicasts, IPv6, MPLS VPNs. Hands on IPv6 BGPv4 aggregation CIDR, benefits, techniques, shortcuts, configuring BGP aggregation, leaking routes. Hands on Reducing routing table size. BGP path selection BGP attributes, attribute types, route selection order, Local preference, AS prepend, MEDs. Hands on Influencing traffic with BGP. BGP routing policies What is policy? Examples, route filtering, AS filtering, REs, applying preference selectively, peer groups. Hands on Sophisticated policies. RIPE and routing registries RIRs, Allocations, assignments, PI vs. PA. Objects, RPSL, routing registry, Hands on The RIPE database. Automating BGP configuration Automation tools, whois, IRRToolSet, Bogon lists, tracking bogon lists, HTTP, Peering, routing registries, DNS. Communities What is a community? Community names, communities for: peer types and geography. RFC 1998, default communities. Hands on Setting local preference on other routers. Route servers What are route servers? LINX route servers, route server policy control, What are route collectors, Looking glasses. Hands on Setting up and working with a route server. Peer relationships IBGP, EBGP, next hop self, advertising routes into/out of BGP, synchronisation. Hands on IBGP, troubleshooting a large BGP network. Route reflectors and confederations Full mesh IBGP, Route reflectors, RR configuration and design, confederations, migration issues. Hands on RR configuration. BGP architectures Stub vs. transit AS, when to use BGP, multihoming strategies and issues, default routes. Multihop EBGP, load balancing. Hands on Multihoming. BGP security RFC 7454, security steps, BGP TTL security, filters, RPKI, ROAs, rsync, rrdp, validators. A secure BGP template. Hands on RPKI prefix validation.

Linux training course description A Linux foundation appropriate for all flavours of Linux, focussed on getting network engineers up and running with Linux. The command line is used throughout. The course progresses from the basics of Linux commands onto useful tools such as grep, then shell features such as piping and then onto shell scripting. Administration aspects covered are the tasks network engineers are most likely to encounter such as software installation. Hands on exercises concentrate on network related tasks such as installing net-snmp and using shell scripts to provide network automation. What will you learn Use Linux commands to perform a variety of tasks from manipulating files to handling processes. Create and edit files with vi. Work with permissions. Write simple shell scripts. Install software packages. Configure base networking. Linux training course details Who will benefit: Network engineers. Prerequisites: TCP/IP Foundation Duration 5 days Linux training course contents What is Linux? Linux distributions, open source software. Getting started Logging in, changing passwords, logging out. Hands on Basics and root access. Linux basics Command structure. The Linux manuals, basic commands (who, date, tty, uname, echo, banner...). Hands on Using the CLI. Connecting to a network IP configuration, DHCP, static addressing, routing, ifconfig, ping, netstat, traceroute, dig. Hands on Network configuration and testing. Managing Software Package Concepts, Comparison of package formats, RPM, rpm Commands, Yum, Debian Packages, dpkg, apt-cache, apt-get, dselect, aptitude, Converting Between Package Formats, Dependencies and Conflicts, Startup Script Problems, Shared Libraries, Library Management Hands on Installing network packages such as nmap and net-snmp. Processes and log files ps, kill, background processes, at, exec, priorities. Managing Linux log files. Syslogd. Setting the time. Cron and cronjobs. Managing Processes, the Kernel: The First Process. Hands on Controlling daemons and services. Setting up a TFTP server. Filesystem commands Home directories, manipulating files and directories, Filesystem layout, Pathnames, hard and symbolic links. Viewing files. Hands on Exploring the filesystem, working with network device configuration files. The Linux editors ed, vi, shell escapes, .exrc. Hands on Editing network device configuration files. Extracting data from files grep, find, cut, sort and paste… Hands on Working with syslog files. Permissions Theory, chmod, chown, newgrp. Hands on Handling permission problems. The shell Metacharacters, piping and redirection. Hands on Running SNMP commands and working with their output. Basic shell scripting What are shell scripts? Simple scripts, control structures. Variable. Setting variables, using variables, set, scope, export, sourcing, environmental variables, read. Positional parameters: $0 to $9, $#, $* and others. shift parameter substitution. Control statements: The test command, if , while loops, for loops, the case statement. Hands on Automating network tasks. Customising your environment Environmental variables, stty, .profile and other startup files. Hands on Customising Linux. Introduction to administration The root user, su. Managing users and groups. Hands on The power of root. Archiving files Backups, tar, cpio, dd, gzip. Hands on Working with tar files. Booting Linux and Editing Files Installing Boot Loaders, GRUB Legacy, GRUB 2, Alternative Boot Loaders, the Boot Process, Boot Messages, Runlevels and the Initialization Process, Runlevel Functions, Runlevel Services, Alternative Boot Systems , Upstart, system. Hands on Installing network services on Linux.

Windows clustering training course description This course covers high availability and disaster recovery technologies such as live migration, storage migration and Hyper-V Replica, as well as providing indepth coverage of failover clustering including a detailed implementation of failover clustering of Hyper- V using SoFS. The course also covers System Center Virtual Machine Manager and implementing Network Load Balancing (NLB) and load balancing clusters. What will you learn Plan and implement a failover cluster. Describe managing server roles and clustering resources. Implement and manage virtual machines. Use System Center Virtual Machine Manager. Describe cloud-based storage and high availability solutions. Implement a Network Load Balancing (NLB) cluster. Windows clustering training course details Who will benefit: Technical staff working with Microsoft clusters. Prerequisites: Supporting Microsoft Windows server Duration 3 days Windows clustering training course contents High Availability in Windows Server Defining levels of availability, High Availability and disaster recovery solutions with Hyper-V Virtual Machines, High Availability with failover clustering in Windows Server. Hands on Configuring High Availability and Disaster Recovery. Implementing failover clustering Planning a failover cluster, creating a new failover cluster. Hands on Creating and Administering a Cluster. Server roles and clustering resources Configuring highly available applications and services on a failover cluster, managing and maintaining a failover cluster, troubleshooting a failover cluster, implementing site high availability with multisite failover clusters. Hands on Managing server roles and clustering resources. Failover clustering with Hyper-V Overview of integrating Hyper-V with failover clustering, implementing Hyper-V with failover clustering, managing and maintaining Hyper-V Virtual Machines on failover clusters. Hands on Implementing failover clustering by using Hyper-V Storage Infrastructure Management with Virtual Machine Manager Virtual Machine Manager, managing storage infrastructure with Virtual Machine Manager, provisioning failover clustering in Virtual Machine Manager. Hands on Managing storage infrastructure. Cloud-Based storage and High Availability Azure storage solutions and infrastructure, cloud integrated storage with StorSimple, disaster recovery with Azure Site Recovery. Hands on Managing cloud-based storage and high availability Network Load Balancing Clusters Overview of NLB, configuring an NLB cluster, planning NLB. Hands on Implementing a Network Load Balancing Cluster

Definitive VPNs training course description A hands on course covering VPNs from the basics of benefits and Internet vs. Intranet VPNs through to detailed analysis of the technologies involved in VPNs. All the major VPN protocols are covered including PPPoE, L2TP, SSL, IPsec and dynamic VPNs. MPLS L3 VPNs are also covered. What will you learn Describe what a VPN is and explain the difference between different VPN types. Recognise the design and implementation issues involved in implementing a VPN. Explain how the various technologies involved in a VPN work. Describe and implement: L2TP, IPsec, SSL, MPLS L3 VPNs. Evaluate VPN technologies. Definitive VPNs training course details Who will benefit: Network personnel. Prerequisites: IP Security foundation for engineers. Duration 3 days Definitive VPNs training course contents VPN overview What is a VPN? What is an IP VPN? VPNs vs. Private Data Networks, Internet VPNs, Intranet VPNs, Remote access VPNs, Site to site VPNs, VPN benefits and disadvantages. VPN Tunnelling VPN components, VPN tunnels, tunnel sources, tunnel end points, hardware based VPNs, Firewall based VPNs, software based VPNs, tunnelling topologies, tunnelling protocols, which tunnelling protocol should you use? requirements of tunnels. VPN security components Critical VPN security requirements, Encryption and authentication, Diffie Hellman, DES, 3DES, RSA, PKI, Ca server types, pre shared keys versus certificates, Enrolling with a CA, RADIUS in VPNs. PPP Encapsulation, operation, authentication. Hands on Setting up PPPoE and analysing PPP packets. PPTP Overview, Components, How it works, control and data connections, GRE. Hands on Building a PPTP VPN. L2TP Overview, components, how it works, security, packet authentication, L2TP/IPSec, L2TP/PPP, Layer 2 versus layer 3 tunnelling. Hands on Implementing a L2TP tunnel. IPSec AH, HMAC, ESP, transport and tunnel modes, Security Association, use of encryption and authentication algorithms, manual vs automated key exchange, NAT and other issues. Hands on Implementing an IPSec VPN. Intranet VPNs Headers, architecture, label switching, LDP, MPLS VPNs. VPN products and services PE and CPE, management, various VPN products. VPN issues and architectures VPN architectures: terminate VPN before/on/ after/in parallel with firewall, resilience issues, VRRP, performance issues, QoS and VPNs. documentation.

VSAT training course description This 2 day training course examines what VSAT is, its usages and users. It then looks at the hardware required for VSAT. What will you learn Explain how VSAT is used Describe the hardware required for VSAT operation. VSAT training course details Who will benefit: Anyone working with VSAT. Prerequisites: None. Duration 2 days VSAT training course contents Introduction History of PMR VSAT Introduction A Brief History Satellite Services Satellite Communications Satellite Footprint Radio Frequency Bands ITU Definitions VSAT Users What is a VSAT? VSATs - Usage VSATs - Users VSAT Hardware Typical System Hardware VSAT ODU and IDU VSAT Station Equipment Diplexer and Feed Horn Typical Waveguide Element Polarisation VSAT Hub Antenna Pointing Outdoor Unit Outdoor (continued) VSAT Network Earth Stations Indoor Unit VSAT Network Earth Stations Indoor Unit Element Hub Station Hub Sub-station Hub Options Hub Options (2) Hub Options (3) Temporary Mount

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CCNA training course description The Implementing and Administering Cisco Solutions (CCNA) course gives you a broad range of fundamental knowledge for all IT careers. Through a combination of lecture, hands-on labs, and self-study, you will learn how to install, operate, configure, and verify basic IPv4 and IPv6 networks. The course covers configuring network components such as switches, routers, and wireless LAN controllers; managing network devices; and identifying basic security threats. It also gives a foundation in network programmability, and software-defined networking What will you learn Install, configure, and operate a small to medium sized network Gain a foundation in the essentials of networking, security, and automation Prepare for the 200-301 CCNA exam, which earns CCNA certification CCNA training course details Who will benefit: Network support help desk technicians involved in the basic installation, operation, and verification of Cisco networks. Anyone seeking CCNA certification. Prerequisites: Introduction to Data communications & networking Duration 5 days CCNA training course content After taking this course, you should be able to: Identify the components of a computer network and describe their basic characteristics. Understand the model of host-to-host communication. Describe the Cisco IOS software. Describe LANs and the role of switches within LANs. Describe Ethernet and describe the operation of switches. Install a switch and perform the initial configuration. Describe the TCP/IP Internet layer, IPv4, its addressing scheme, and subnetting. Describe the TCP/IP Transport and Application layers Explore functions of routing. Implement basic configuration on a Cisco router. Explain host-to-host comms across switches and routers. Identify and resolve common switched network issues and common problems associated with IPv4 addressing. Describe IPv6 main features and addresses, and configure and verify basic IPv6 connectivity. Describe static routing. Describe, implement, and verify VLANs and trunks. Describe inter VLAN routing. Explain the basics of dynamic routing protocols and describe components and terms of OSPF. Explain how STP and RSTP work. Configure link aggregation using EtherChannel. Describe the purpose of Layer 3 redundancy protocols. Describe basic WAN and VPN concepts. Describe the operation of access control lists (ACLs) and their applications in the network. Configure Internet access using DHCP clients and explain and configure NAT on Cisco routers. Describe basic QoS concepts. Describe the concepts of wireless networks, which types of wireless networks can be built, and how to use Wireless LAN Controllers (WLCs). Describe network and device architectures, introduce virtualization, network programmability and SDN and describe smart network management solutions such as Cisco DNA Center™, SD-Access, and SD-WAN. Configure basic IOS system monitoring tools. Describe the management of Cisco devices. Describe the current security threat landscape. Describe threat defence technologies. Implement a basic security configuration of the device management plane. Implement basic steps to harden network devices. Detailed course outline Exploring the Functions of Networking. The Host-to-Host Communications Model. Operating Cisco IOS Software. Introducing LANs. Exploring the TCP/IP Link Layer. Starting a Switch. The TCP/IP IP layer, IPv4 Addressing, and Subnets. The TCP/IP Transport Layer and Application Layer. Exploring the Functions of Routing. Configuring a Cisco Router. Exploring the Packet Delivery Process. Troubleshooting a Simple Network. Introducing Basic IPv6. Configuring Static Routing. Implementing VLANs and Trunks. Routing Between VLANs. Introducing OSPF. Redundant Switched Topologies with EtherChannel. Explaining Basics of ACL. Enabling Internet Connectivity. Explaining the Evolution of Intelligent Networks. Introducing System Monitoring. Managing Cisco Devices. Securing Administrative Access. Implementing Device Hardening. Self-Study: Building Redundant Switched Topologies. Exploring Layer 3 Redundancy. Introducing WAN Technologies. Introducing QoS. Explaining Wireless Fundamentals. Introducing Architectures and Virtualization. Examining the Security Threat Landscape. Threat Defense Technologies.

UNIX system administration training course description This five day hands on course provides a comprehensive coverage of core UNIX administration tasks. The course covers generic UNIX and is available for any UNIX distribution required. What will you learn Administer & configure UNIX systems. Maintain UNIX by handling disk space and taking regular backups. Manage software packages. Perform basic troubleshooting. Maintain a secure UNIX system. Describe the organisation and implementation of the filesystem. UNIX system administration training course details Who will benefit: System administrators Network administrators. Prerequisites: UNIX fundamentals. Duration 5 days UNIX system administration training course contents Part 1 Exploring UNIX command-line tools Using a shell, shell configuration, environment variables, getting help, streams, redirection and pipes, processing text using filters, manipulating files, regular expressions, grep, sed. Managing software Package concepts, comparison of package formats, RPM, rpm commands, yum, dpkg, apt-cache, apt-get, dselect, aptitude, converting between package formats, dependencies and conflicts, startup script problems, shared libraries, library management, managing processes, the kernel: the first process, process lists, foreground & background processes, process priorities, killing processes. Configuring hardware Configuring firmware and hardware, RQs, I/O addresses, DMA addresses, Boot disks, coldplug and hotplug devices, configuring expansion cards and PCI cards, kernel modules, USB devices, UNIX USB crivers, configuring hard disks, partitioning systems, LVM, common layouts, creating partitions and filesystems, maintaining filesystem health, tuning, journals, checking filesystems, monitoring disk use, mounting and unmounting filesystems. Managing files File management commands, file naming and wildcards, file archiving, links, directory commands, file ownership and group, file access control, permissions, chmod, defaults, file attributes, disk quotas, enabling and setting quotas, locating files, the FHS. Booting UNIX and editing files Installing boot loaders, GRUB legacy, GRUB 2, alternative boot loaders, the boot process, boot messages, runlevels and the initialization process, runlevel functions, runlevel services, alternative boot systems, upstart, system. Part 2 Configuring the X window system Localization, configuring basic X features, X server options, methods of configuring X, X display information, X fonts, the X GUI login system, XDMCP server, using X for remote access, screen display settings, setting your time zone, your locale, configuring printing, conceptualizing the UNIX printing architecture, understanding PostScript and ghostscript, running a printing system, configuring CUPS, monitoring and controlling the print queue. Administering the system Managing users and groups, tuning user and system environments, using system log files, understanding syslogd, setting logging options, manually logging data, rotating l;og files, reviewing log file contents, maintaining the system time, UNIX time concepts, manually setting the time, using NTP, running jobs in the future, understanding the role of cron, creating system cron jobs, creating user cron jobs, using anacron, using at. Configuring basic networking TCP/IP, network hardware, network addresses, hostnames, network ports, configuring UNIX for a local network, configuring with DHCP, static IP address, configuring routing, using GUI configuration tools, ifup and ifdown, diagnosing network connections, testing connectivity, tracing a route, checking network status , examining network traffic, additional tools. Writing scripts, configuring email, and using databases The shell environment, aliases, shell configuration files, writing scripts, commands, variables, conditional expressions, loops, functions, managing email, choosing email software, securing your email server, managing data with SQL, picking a SQL package, understanding SQL basics, using MySQL. Securing your system Administering network security, super server restrictions, disabling unused servers, administering local security, securing passwords, limiting root access, setting login, process, SUID/SGID files, configuring SSH, using GPG, generating, importing and revoking keys, encrypting and decrypting data, signing messages and verifying signatures.