Chapter 17 Configuring a LAN

1
Chapter 17 Configuring a LAN

• Setting Up the Hardware
• Connecting the Computers
• Gateways and Routers
• Network Interface Card (NIC)
• Configuring the Systems
• system-config-network
• iwconfig
• Setting Up Servers
• More Information

2
Setting up the Hardware

• Computers with Network interface cards or network
  adapters
• Cabling or wireless hardware
• Hub or switch
• Router if going outside of your LAN
• ISP information (IP address or DHCP)

3
Basic Local Area Network
4
Connecting the Computers

• Cabling
• Coaxial bus network (NOT)
• Cat 5 or 5e or 6 cable with connectors
• Hubs
• Passive simply connects all nodes together
• Active a switch
• Switches
• Connect all station one-to-one as called upon
• Routers
• Connect to other networks

5
Network Interfaces (NICs)

• Check web sites to see what NICs are supported
  for your version of OS
• Make sure you have latest drivers
• Check all README files especially if you are
  installing a wireless NIC

6
Configuring the system

• Use kudzu to autodetect hardware and install
  software
• Obtain networking information from sys admin or
  use DHCP (i.e. ISP)
• Use NAT and private IP addresses when possible

7
The Network Configuration Window
8
system-config-network

• Use to add a device
• Configure your network settings
• Configure or add to your routing tables
• Configure or add to your hosts file

9
The Ethernet Device Window
10
iwconfig Wireless Configuration

• Use either system-config-networks or iwconfig
• Use to set up WEP key
• iwconfig eth1 key 19BDFEED43229
• Use auto mode to set up ad hoc or infrastructure
  mode
• iwconfig eth1 mode Auto
• Use iwconfig to set up ESSID (extended service
  set ID)
• iwconfig eth1 essid My wireless Network

11
Setting up Servers

• DNS
• NIS
• NFS
• OpenSSH
• DHCP
• Samba

12
Any Questions?