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# If you don't know enough about packet filtering, we suggest that you |
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# If you don't know enough about packet filtering, we suggest that you |
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# take time to read this book: |
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# take time to read this book: |
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# |
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# Building Internet Firewalls |
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# Building Internet Firewalls, 2nd Edition |
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# Brent Chapman and Elizabeth Zwicky |
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# Brent Chapman and Elizabeth Zwicky |
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# |
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# O'Reilly & Associates, Inc |
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# O'Reilly & Associates, Inc |
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# ISBN 1-56592-124-0 |
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# ISBN 1-56592-871-7 |
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# http://www.ora.com/ |
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# http://www.ora.com/ |
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# http://www.oreilly.com/catalog/fire2/ |
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# |
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# For a more advanced treatment of Internet Security read: |
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# For a more advanced treatment of Internet Security read: |
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# William R. Cheswick, Steven M. Bellowin |
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# William R. Cheswick, Steven M. Bellowin |
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# |
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# Addison-Wesley |
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# Addison-Wesley |
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# ISBN 0-201-6337-4 |
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# ISBN 0-201-63357-4 |
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# http://www.awl.com/ |
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# http://www.awl.com/ |
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# http://www.awlonline.com/product/0%2C2627%2C0201633574%2C00.html |
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if [ -n "${1}" ]; then |
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if [ -n "${1}" ]; then |