Network fundamentals training course description
An intensive hands on IP foundation leading to LINX Accredited Internet Technician stage 1. The course focuses on all parts of TCP/IP including layers 4 to 7 on end stations as well as layer 3 on routers. The TCP/IP protocols are also studied to enable delegates to be able to troubleshoot TCP/IP using Wireshark. Hands on sessions are used to reinforce the theory rather than teach specific manufacturer equipment.
A multiple choice exam, leading to the LAIT I certification, is available after the course. The exam consists of 40 questions and lasts 1.5 hours.
What will you learn
Use ping, traceroute and other tools to diagnose faults on a network.
Configure IP on PCs and routers.
Plan IP addresses and subnets.
Analyse IP and TCP packets using an analyser.
Troubleshoot TCP/IP.
Network fundamentals training course details
Who will benefit:
Network engineers.
Prerequisites:
None
Duration
5 days
Network fundamentals training course contents
What is TCP/IP?
TCP and IP are protocols, 7 layer model, network layers, hardware/software layers, internetworking, protocols, What is IP? What is TCP? The internet, The IAB, RFCs.
Ping and Wireshark
Host configuration, IP addresses, subnet masks, default gateways, ping.
Hands on Base configuration. Testing with ping. Analysing packets with Wireshark.
Switches and Wireshark
Switches versus hubs, layer 2 forwarding table, flooding, broadcasts.
Hands on Building a switched based network.
Configuring network devices
Configuration options, console port, putty, telnet.
Hands on Configuring switches, telnet.
IP
IP packet format, protocol field, TTL, DiffServ, fragments, ICMP.
Hands on IP packet analysis.
IP addressing
32 bits, dotted decimal, rules, networks, role of subnet masks, simple subnetting, prefix notation. Broadcasts, special use addresses.
Hands on Planning and implementing addressing.
IP and the lower layers
ARP, media not supporting ARP.
Hands on ARP.
Routing
What are routers? What routers do, default gateways, routing and addressing, routing tables, ways to update routing tables.
Hands on Building a routed network, traceroute.
Routing protocols
IGPs and EGPs, RIP, RIPv2, Why not to use RIP, OSPF, OSPF metrics, convergence, distance vector protocols, link state protocols.
Hands on OSPF, analysing routing tables, loopbacks.
Network simulators
Network simulators, EVE-NG, GNS3, CML.
Hands on Using EVE-NG.
Subnetting
Subnetting to the bit level, ranges, how prefixes are used.
Hands on Subnetting.
VLANS and IP addressing
What are VLANs, tagging, 802.1Q, Inter VLAN routing.
Hands on Inter VLAN routing.
TCP and UDP
Layer 4, port numbers, client ports, broadcasts multicasts and layer 4, UDP header, TCP header, connections, ACK, sliding windows, options, connection states. Sockets.
Hands on Analysing TCP packets.
IPv4 address configuration
Private addresses, NAT, NAPT, dynamic addressing, DHCP, link local addresses.
Hands on DHCP, NAT.
IPv6
What is IPv6, 128 bit addresses, address formats, IPv6 address allocation, header format, migration, dual stack, tunnelling, NAT64, DNS64.
Hands on IPv6 setup troubleshooting.
IPv6 address configuration
Static addressing, EUI-64 addresses, IPv6 address order, SLAAC, DHCPv6.
Hands on SLAAC.
Applications
Clients, servers, HTTP, Email, resource sharing, VoIP, video, terminal emulation, remote desktop. Network management and SNMP.
Hands on Servers, TFTP, VoIP packet analysis.
DNS
Names and addresses, hosts file, how DNS works. FQDNs, DNS client configuration.
Hands on Troubleshooting DNS.
Security
Firewalls, firewall architectures, DMZ, how firewalls work, proxy servers, filtering, ACLs, IDS, VPNs, authentication, encryption, tunnels, secure protocols.
Hands on Firewalls, SSH
Troubleshooting
Methods, tools. Using the 7 layer model. Troubleshooting toolkits.
Hands on Fixing the network.