855 research outputs found
Assessing the Value of Network Security Technologies
Proper configuration of security technologies is critical to balance the
access and protection requirements of information. The common practice
of using a layered security architecture that has multiple technologies
amplifies the need for proper configuration because the configuration
decision about one security technology has ramifications for the
configuration decisions about others. We study the impact of
configuration on the value obtained from a firewall and an Intrusion
Detection System (IDS). We also study how a firewall and an IDS interact
with each other in terms of value contribution. We show that the firm
may be worse off when it deploys a technology if the technology (either
the firewall or the IDS) is improperly configured. A more serious
consequence for the firm is that even if each of these (improperly
configured) technologies offers a positive value when deployed alone,
deploying both may be detrimental to the firm. Configuring the IDS and
the firewall optimally eliminates the conflict between them, resulting
in a non-negative value to the firm. When optimally configured, we find
that these technologies may complement or substitute each other.
Further, we find that while the optimal configuration of an IDS is the
same whether it is deployed alone or together with a firewall, the
optimal configuration of a firewall has a lower detection rate (i.e.,
allow more access) when it is deployed with an IDS than when deployed
alone. Our results highlight the complex interactions between firewall
and IDS technologies when they are used together in a security
architecture, and, hence, the need for proper configuration in order to
benefit from these technologies
Final technical report / rapport technique final annex 12a - updated protocol and technical guidelines for fish hatcheries
The development of a network of private sector fish hatcheries at the local level is important to support the growth of household level aquaculture production. The ten hatcheries supported by the project are functioning well and have been successful in ensuring a local supply of fingerlings in target provinces (Prey Veng, Kampong Cham and Kampot, Cambodia). Establishing fish hatcheries through a cost-share model proved to be a successful component of the project, as they became profitable within the program period. This report provides details of the project including design drawings of hatcheries, components of construction, fingerling production and nursing
Too little and too much : water and development in a Himalayan watershed
Contains 1 CD- ROM in the back pocke
- …