Overview
An intensive generic hands on IP foundation. The course focuses on all parts of IP networking: layer 2 on switches, layer 3 on routers and layer 4 on transport. Layers 5 to 7 are also covered.
Delegates will build and troubleshoot routed and switched networks, as well as VLANs and InterVLAN routing. Hands on sessions are used to reinforce the theory rather than teach any specific manufacturer’s equipment.
This course is also ideal for IT professionals from other backgrounds who are finding IP is more involved in their work.
This course also teaches how to subnet numbers in seconds
Prerequisites
None.
Delegates will learn how to
By the end of the course delegates will be able to:
- 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.
Outline
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 simple 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.
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.
Hands on: Fixing the network
EXAM
Frequently asked questions
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