Building Internet Firewalls

By D. Brent Chapman, Elizabeth D. Zwicky

Cover | Table of Contents | Index | Sample Chapter | Colophon

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Colophon

Our look is the result of reader comments, our own experimentation, and feedback from distribution channels. Distinctive covers complement our distinctive approach to technical topics, breathing personality and life into potentially dry subjects. The illustration on the cover of Building Internet Firewalls is of a doorway of Gothic design, topped by a crenelated parapet. The period of Gothic architecture is often said to have begun in the mid-12th century, when the church of Saint-Denis was built, in Paris in 1144. The architect of that church is unknown. Although Gothic architecture was mainly used in the building of churches, by the late 13th century it was used for secular purposes also, including fortifications. The structure of the merlons (the raised portions of the parapet) in this illustration give information about the date and place of its construction. The oblique sides of the merlons suggest that the doorway was built in the 14th century, and the plain but sloping top suggests that it was built in England or France.

Merlons were designed to provide defense to those inside the fortification, while crenels (the recessed portions between the merlons) let them shoot projectiles at attacking enemies. Given the size of this door, and the relatively low merlons, this may have been a postern, a doorway used by foot travellers to avoid lowering the main gate. Edie Freedman designed the cover of this book, using a 19th-century engraving from the Dover Pictorial Archive. The cover layout was produced with Quark XPress 3.3 using the ITC Garamond font.

The inside layout was designed by Nancy Priest, Edie Freedman, and Jennifer Niederst Text was prepared in SGML using the DocBook 2.1 DTD. The print version of this book was created by translating the SGML source into a set of gtroff macros using a filter developed at ORA by Norman Walsh. Steve Talbott designed and wrote the underlying macro set on the basis of the GNU gtroff -gs macros; Lenny Muellner adapted them to SGML and implemented the book design. The GNU groff text formatter version 1.09 was used to generate PostScript output. The text and heading fonts are ITC Garamond Light and Garamond Book. The figures that appear in the book were created in Macromedia Freehand 5.0 by Chris Reilley. This colophon was written by Clairemarie Fisher O'Leary.

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