#

| Preface |

## Online Information

Information related to this book is available via anonymous FTP at:

> ftp://ftp.greatcircle.com/pub/firewalls-book/

and on the World Wide Web at:

> http://www.greatcircle.com/firewalls-book/

Errata are available from:

> ftp://ftp.greatcircle.com/pub/firewalls-book/Errata

and on the World Wide Web at:

> http://www.greatcircle.com/firewalls-book/errata.html

Comments and Questions |  | Acknowledgments