Proactive Recovery in a Byzantine-Fault-Tolerant System

EBook Description: This paper describes an asynchronous state-machine replication system that tolerates Byzantine faults, which can be caused by malicious attacks or software errors.

Are your systems and network functioning correctly? Can you be sure at this moment? Every administrator has some need to be able to answer these or similar questions on an ongoing basis.

NT Security in an Open Academic Environment

Stanford Linear Accelerator Center (SLAC) was faced with the need to secure its PeopleSoft/Oracle business system in an academic environment which only has a minimal firewall. To provide protected access to the database servers for NT-based users all over the site while not hindering the lab's open connectivity with the Internet, we implemented a pseudo three-tier architecture for PeopleSoft with Windows Terminal Server and Citrix MetaFrame technology

The Design and Analysis of Graphical Passwords

In this paper we explore an approach to user authentication that generalizes the notion of a textual password and that, in many cases, improves the security of user authentication over that provided by textual passwords.

Dealing with Public Ethernet Jacks - Switches, Gateways, and Authentication

This paper describes the tools and techniques developed and deployed to address the problem of blocking unauthorized users on unprotected Ethernet jacks.

A Retrospective on Twelve Years of LISA Proceedings

System administrators don't have a lot of time for introspection of their field. So work is repeated and new administrators, or people trying to do research on system administration, don't know where to start. To provide a starting point, we have examined the last twelve years of LISA proceedings and have categorized the papers in two separate ways

Bro: A System for Detecting Network Intruders in Real-Time

With growing Internet connectivity comes growing opportunities for attackers to illicitly access computers over the network. The problem of detecting such attacks is termed network intrusion detection, a relatively new area of security research

A Secure Environment for Untrusted Helper Applications - Confining the Wiley Hacker

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Building Systems That Flexibly Control Download Executable Content

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Registry Hacks for Servers

Advanced users of Windows XP are used to digging around in the Registry looking for ways to tweak performance or push the envelope of Windows' abilities. Provided you back up your Registry before hacking it, no harm usually comes from such endeavors.

Adaptive Network Security: Moving from Implicit to Explicit Permissions

With the frequency and severity of attacks increasing, and organizations relying increasingly on networked automation to gain a competitive edge, is it finally time to reconsider the prevailing approach to network security? How can corporations ensure that users get the network access they need, without jeopardizing the security of the network?

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