Transcript Configuring your Home Network

Configuring your Home
Network
Jay Ferron
ADMT, CISM, CISSP, MCDBA, MCSE, MCT, NSA-IAM
Questions
How many of you have more than one
computer at home?
How do you connect to the Internet (DSL,
cable, dialup)?
How many already have a home router?
Already have a wireless router?
Agenda
What is a Home network
Connecting things together
Firewalls and Filtering
Setting up a home router
Setting up Print and File Sharing
Questions
Home Network
One or more computers connected:

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To the Internet with a router
To each other in order to share Resources:
Internet Connections
Sharing Files
Sharing Printers
What is a Router
Connects one network to another
Sometimes called a “Gateway”
In our case it connects to your cable
modem or DSL Line
Routers keep track of IP addresses and
physical (MAC) addresses of hosts
Managed (As we shall see)
What is a Cable/DSL Modem
Usually provided and controlled by your
ISP
Connects your home to the Internet.
This is the device that gets your public IP
address
Normally has no firewall protection
Make sure you use the right cable
What is a Firewall
A device the filters packets or traffic
Its job is to be a traffic cop
You configure the firewall:


What will allow to pass
What will it block
Hides your home network from the outside
world
Can be either in hardware or software
Firewall Protection
Internet
Firewall
Home
Network
1.
Implement a firewall (checks incoming traffic at the network before it gets to your home
network) Default – Blocks all Incoming connections
2.
Leaving you home network default is allow all outbound connections
3.
Hardware firewalls protect you home network by stop all traffic before it get to your
computers
4.
Personal software firewall on your computer blocks incoming and outgoing (lets you know
what is leaving your computer)
Firewall Routers
The idea is layers of protection
Examples of home combo units include



Dlink
Netgear
Linksys
Software Firewalls
Add additional protection by:
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Controlling what leaves your computer
Adding a second level of protection
By being aware of application level attacks
By allow you to schedule
Usage of the internet by time (control access at
night)
By location (block content for young children)
Software Firewalls for Home Use
McAfee Firewall
Symantec’s Norton Personal Firewall
Zone Alarm (Free)
Computer Associates with Firewall (free)
Windows Firewall in XP Service Pack 2 (free)
XP Service Pack 2
1.
2.
3.
4.
5.
Backup you computer
Do you have old hardware ?
Have you backup your computer ?
Do you have enough Space ?
Download Service Pack 2
1.
6.
Disconnect from your network
1.
2.
7.
8.
9.
10.
11.
When Software agreement appears
Unplug network card cable
Turn off Wireless
Turn off Anti Virus software
Install
Turn on Anti Virus
Reconnect to Network
If problems call 1-866- PC- Safety
Wireless
What is wireless
Wireless Networking Standards


802.11 a, b, and g
Recommend a standard “g” model
Wireless Security Standards


Recommend Wired Equivalent Privacy (WEP)
Wi-Fi Protected Access (WPA)
Steps to protect your wireless
network
1. Change the default password on your router
2. Enable WEP on router and wireless workstation
3. Use MAC address filtering
4. SSID broadcast of
5. Prohibit Peer-to-peer (Ad Hoc) networking
5. Keep current on hardware bios upgrades
Demo: How to configure Wireless
Firewall/router
Example:



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
Basic Settings
Wireless Settings
Backup Settings
Set Account name and password
Blocking and Filtering
Configuring Windows for
Networking
Print and File Sharing:
 Useful, but
 Risky if not all computers are secure
Weak Passwords
Your computer password is the
foundation of your computer security
No Password = No Security
Old Passwords & Same Password = Little Security
Change the “administrator” password on your
computer
Questions