Linux Security: TCP-Wrappers?
A Unix server provides a "service" to the rest of the network to which it is connected. These services, such as FTP or HTTP, then provide the functionality required. Linux being derived from Unix provides services in the same manner as other traditional Unix systems. There is a series of events that occurs to actually provide a network service, and understanding this series of events allows you to secure these services to prevent unauthorized access. In Linux, like Unix, this series of events is very well defined, and TCP-Wrappers is implemented to work within the structure of these events to enhance security.
The link for this article located at Linux.com., Scott Nipp --Â Â is no longer available.