Proper Care and Feeding of Firewalls

With the recent astounding growth and popular appeal of The Internet, network security is becoming increasingly important. Many sites are re-evaluating their security policies, and reviewing what defenses can be built, to keep the "teeming hordes" of hackers at bay. This paper reviews issues relating to one such defense -- proper selection, construction, and maintenance of an Internet Firewall -- a network node connected between a site and its" network peers, providing a configurable gateway...