CS 182.51: Security for Cable and DSL Home Networks
© 2019
Eric Skagerberg
(All rights reserved. This material may not be reproduced in printed or electronic format without the express permission of the author.)
Adjunct Instructor,
Computer Studies Department
Santa Rosa Junior College
, California
Internet TCP/IP addressing
Page last updated 13 May, 2020
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Test your Internet connection
Local address numbers at the command prompt:
Windows Command Prompt:
ipconfig /all
Mac OS X Terminal command prompt:
ifconfig -u
Linux Terminal command prompt:
ip addr show
Outside address number:
http://www.whatismyip.com/
Vulnerability Testing
Gibson Research Corporation
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-- Free tests of your computer's Internet vulnerability