Wireless networking has many advantages over plugging all your computers in with Ethernet cables, but keeping track of all the IP addresses and network passwords can be a hassle. If you've forgotten your computer's IP address or network password, there are tools included in Microsoft Windows and Mac OS X operating systems that show you this information. Once you've found the information, it might be a good idea to write it down somewhere you'll remember.
Windows
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Step 1
Open the "Start Menu" and select "Control Panel." Click "Network and Internet," then "Network and Sharing Center."
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Step 2
Click on the network listed beside the "Connections" category on the right side of the window.
Step 3
Click the "Details" button. Your IP address is listed on the fifth row to the right of where it says "IPv4." Click "Close."
Step 4
Click "Wireless Properties," then click the "Security" tab at the top of the window that pops up.
Step 5
Click the "Show characters" box below "Network security key." Your network password then shows up in the text field.
Macintosh OS X
Step 1
Open "System Preferences" from the Apple menu in the top left hand corner of the screen.
Step 2
Click the "Network" icon in the "System Preferences" window.
Step 3
Click on the network adapter whose IP you want to know. Its IP address is listed on the right side of the window.
Step 4
Open a Finder window and go to the "Applications" folder, then open the "Utilities" folder. Open the "Keychain access" program.
Step 5
Find the name of the network your Mac is connected to. The network password is listed to its right.