LINX 1 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 included at the end of 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.

LINX 1 training course details

LINX 1 training course contents

• What is TCP/IP?

TCP and IP are protocols, 7 layer model, hardware/ software layers, network 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, PPP, other media.
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 RIP, OSPF analysing routing tables.

• GNS3

Network simulators.
Hands on Using GNS3.

• 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.

• The Internet

Autonomous systems, Peering, transit, looking glasses.
Hands on Internet routing tables.

• 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. EXAM

Learning path

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