... us help you learn about firewalls! 5Introductionby Brian Komar, Ronald Beekelaar,and Joern Wettern, PhD Firewalls FOR DUMmIES ‰ 2ND EDITION6 Firewalls For Dummies, 2nd Edition Part IIntroducingFirewall ... Port Listing 384Index 393 Firewalls For Dummies, 2nd Edition xviIntroductionWelcome to Firewalls For Dummies, a book written to help the averageJoe understand how firewalls work and how to ... Wiley, the Wiley Publishing logo, For Dummies, the Dummies Man logo, A Reference for theRest of Us!, The Dummies Way, Dummies Daily, The Fun and Easy Way, Dummies. com and related trade dressare...