Description
The "Networks: Fundamentals and Simulations" training aims to provide an in-depth understanding of computer networks and how they work.
Who is this training for ?
For whom ?
Computer maintenance technician, Junior network administrators, System administrators needing to review network fundamentals
Prerequisites
Computer knowledge
Training objectives
Training program
- Discover the fundamentals of networks
- Presentation of networks
- The different elements and their roles
- Users and their needs
- Architecture and topology aspects
- Network scopes: PAN, LAN, MAN and WAN
- Understanding the OSI Model Structure
- Organization
- Encapsulation principle
- Presentation of the 7 layers
- Discover the communication supports
- Limited and non-limited supports
- Twisted pairs
- Optical fibers
- Wireless links
- Identify the different network equipment
- Repeaters and Hubs
- Bridges and Switches
- The Spanning Tree (principle and mode of operation)
- Routers: roles and interest
- Discovery of active elements: LLDP and CDP protocols
- How wireless networks work
- WLAN concept
- SSID
- Communication methods 802.11, 802.11a;b;g;n
- Security: WEP, WPA, WPA2, EAP, 802.1x, RADIUS
- Discover the Link layer
- Media access methods: concept of collision
- Collision management: CSMA/CD and CSMA/CA
- Concept of MAC address: role and format
- Unicast, Broadcast and Multicast MAC address
- Format of an Ethernet frame
- Port aggregation: 802.3ad standard, LACP and PAGP protocols
- Understanding the IP protocol
- Addresses and address classes
- Classless addresses: CIDR
- Unicast, Broadcast and Multicast
- IP/MAC resolution: protocol ARP
- The IP protocol
- Format of an IP packet
- Manage subnets
- Subnet concepts and CIDR notation
- Subnet aggregation: VLSM
- Know the ICMP protocol
- Principle
- Structure of an ICMP datagram
- Usage examples: ping and traceroute
- IP Routing
- Routing overview
- Routing table
- Static routing
- Dynamic routing
- - Principles
- - Dynamic routing types
- - Main protocols (OSPF, EIGRP,ISIS, BGP)
- MPLS overview
- Understanding VLANs
- Principle of VLANs
- Types of VLANS
- IPv6 Overview
- IPv4 address space issues
- Introduction to IPv6
- Understanding UDP and TCP protocols
- Transport layer protocols: concept of port and socket
- UDP - communication in non-connected mode
- Structure of a UDP datagram
- TCP: communication in connected mode
- Principle of establishing a TCP connection
- Structure of a TCP segment
- Sequence numbers, windows and acknowledgments
- The states of a TCP connection
- Understanding the DHCP service
- DHCP: Dynamic IP configuration
- Structure of a DHCP negotiation
- DHCP relay
- Other services provided by DHCP
- Discover the DNS service
- Name resolution
- Role and interest of DNS
- DNS architecture and the different types of DNS servers
- Iterative and recursive queries
- The DNS Name Server
- - Primary Server
- - Secondary Server
- - Zone Transfer
- DNS Records
- Zone delegation
- DNS query: nslookup and dig utilities
- Coupling with DHCP: dynamic updates
- Understanding VPNs
- Principles of a VPN
- Typology of VPNs
- Main protocols: GRE, PPTP, L2TP, IPSec, SSL/TSL
- Become aware of network security
- Security issues
- Filtering router
- Address/port translator
- Proxy
- Firewall
- DMZ
- Set up a simple network of virtual machines
- Reminder of the basics with simple routing solution
- Adding static route(s)
- Attempting to access the Internet: problem, analysis and resolution
- Set up a virtual machine network with NAT/PAT
- Using Private Address Ranges
- Implementing NAT
- Installing a Web Server on the LAN
- Implementing work of PAT
- Detection/diagnosis of network operating anomalies
- Malfunction detection
- Analysis of the approach
- Proposal of corrections
- Implementation of corrections
