First of all, your teacher was right. Here's what you will want to do:
Go back and open up your command prompt, also, open a web browser window (IE, FireFox, whatever). Type the following into the Command Prompt:
You want to pay attention to the following information (the more you get to know these numbers and how they interrelate, the easier it will be to troubleshoot network problems):
1- IP Address
2- Subnet Mask
3- Default Gateway
4- DHCP Server
5- DNS Servers
Specifically, your Default Gateway is the router or machine that is physically connected to the internet via transmission media (the cable connecting router to the wall jack or to modem which is connected to the wall). The IP address of the Default Gateway should have web interface which operates over HTTP to allow administrators to mange the equipment from any network-connected PC.
Take your Default Gateway's listed IP address and plug that into your browser's address bar in the form:
For example, if you were attempting to access the web Administrative interface for a Linksys router your Default Gateway would probably be 192.168.1.1, so to reach the Administrative web interface you type into your browser:
Hit enter and you should receive a secondary logon prompt to access this interface. From within the web administrative interface you will be able to configure the firewall settings, change the administrative password, create a WEP key. You probably want to ensure that the Firewall is Enabled, change your Administrator password from the default, and create a WEP key (if one was not provided by your ISP). You'll want to consult any documentation to determine which settings in the firewall and security settings which are appropriate for your security needs. You should be able to find the administrative manual for your hardware on the manufacturer's website.
If you open up your Network Connections folder, you can determine if your Wireless Network Connection has security enabled.
Start >> Connect to >> Show All Connections >> right-click Wireless Network Connection >> View Available Wireless Networks
When the Wireless Network Connection available network listing appears, look for your network among the list and you should see a padlock icon and also state "Security-enabled wireless network." If the padlock icon is not present, you should revisit your router's Administrative interface and configure the firewall and security settings appropriately.
Edited by Cyb3r_Ninj@, 01 March 2008 - 06:39 PM.