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2003-01-17Trustworthy ComputingSnippets ...Perspective: Decrypting the secret to strong security - Tech News - CNET.com. From Vlad, an article by Whitefield Diffie on the strength of not having security depend on secrets to be strong.Microsoft's privacy officer resigns - Tech News - CNET.com. With a little perspective on how Trustworthy Computing is organized within Microsoft. Linux attracting hacker attentionThe two faces of Linux. The increased usage of Linux, especially by corporations, is making it a bigger target for hackers, and the vulnerabilities are now showing up.«"In the question of what's more secure, Linux or Microsoft, the answer is, it's not Linux," said Eric Hemmindinger, research director, information security at Aberdeen Group. "If there's a lesson ... it's that both OS environments are sources of vulnerabilities today, and despite best efforts of suppliers, they're going to continue to be."» I am in the middle of fighting with the security on my Windows XP Pro laptop configuration. I have managed to come up with a way where I can't see folder security and permission settings anymore, but my system is secure enough that it should not be of any use to people. (The file level and drive level securities show up as properly inherited, I just can't get to the directory stuff.) Computer TechnologyHardware ArchitecturesMore on shared computingWired News: Open Sourcers Say Grid Is Good. And about the tension between commercial firms around their uses of open-source development. Factoid: IBM has the largest commercial installed base of systems running Linux. Hmm.Wired News: Grid Computing Good for Business. An overview of how grid computing is beneficial and how it is progressing. 2003-01-15Network TechnologyCisco Internet Protocol Journal: The Social Life of Routers. Applying Knowledge of Human Networks to the Design of Computer Networks. From classmate Diane Berwick, an interesting link about network design. It may also lead us to the computer that the internet is (someday) and how it functions as a social structure. Something I will look at more as we go along.Loose EndsProcess Power - Emerging Technology - CIO Magazine Jan 1,2003. A summary of Business Process Management (BPM) software and how it is being moved into interoperable, integrative functions that make enterprise application integration far more tractable.Computer TechnologyComputer ArchitecturesVirtual memory conceptsVirtual Memory: Introduction. Here's an interesting site that explores Virtual Memory as one of the great ideas in computing. Fun.Computer NetworksMobility of access and presenceRe: [ba-ohs-talk] Mobile HyperScope?. A follow-up submission, also by Alatalo Toni, on the impact of presuming a thin client with regard to issues of caching, interruption of connections, etc.[ba-ohs-talk] p2p as a solution to the loose connectivity of the mobile. Here is a note that is relevant to the discussion of mobility and always-on presence wherever we are, related to whether or not the network is becomng a computer, an operating system. 2003-01-14Ring networksFDDI Tutorial Index. The token-ring pages in Ireland were indeed dated (around 1998), and Interoperability Lab doesn't have a token ring section any more. But there is good information (from 1997) on FDDI though.Token Ring Network Home Page; A project on IEEE 802.5 Networks. A nice overview of token-ring technology. It may not be that recent. Operating SystemsResearch sourcesSIGOPS. An useful link from Webopedia! I was touched to read about the Mark Weiser award, and that Frans Kaashoek (who worked on Amoeba) is its first recipient.Study resourcesVirginia Tech CS Online Modules. A complete set of Virginia Tech (vt.edu) animations for key computer science topics (from Kimberly, our M.Sc IT Computer Structures instructor). The authors cite an earlier edition of Brookshear, so that is useful too.Online CS Modules: Operating Systems. the top of the vt.edu module. The effort to distinguish between resources, programs, and processes is an interesting one to deepen. Webopedia: Online Dictionary for Computer and Internet Terms. Ricky, don't loose this number! An important source that is being refined and expanded regularly. Very helpful in navigating nomenclature about computing in a way that doesn't corrupt some of the important conceptual distinctions. I am keen about presenting these concepts, or at least alluding to them, in elementary material in a way that does not blur them and promote misleading generalizations by neophytes (and their instructors). real time - Webopedia.com. Recognizes that "real time" is used in two senses as a concept about computer operations, and that they aren't the same. Something I tripped over in some discussions of operating-system principles, where the two notions are blurred together and hence confused. Shared SystemsMore background on distributed computationResearch in Math and CS at Vrijje Universiteit. A guide to current and past research, including Amoeba and its successors. There are some key themes in AI and Computer Systems topics.Programming Distributed Systems. A summary of Henri Bal's book, published in 1990. "This book is concerned with how multiple computers can co-operate in executing single jobs. In particular the book discusses how the turnaround time of a job can be reduced by running different pieces of a job in parallel on multiple machines." The Orca Parallel Programming Language. This langauge is designed for application in distributed-computing settings. Prof. Henri E. Bal was the faculty member, with an overlap with the Amoeba developers. Selected Amoeba Papers. This collection of formal publications begins in 1986 and continues to 1994. A. S. Tanenbaum is one of the consistent authors, along with M. F. Kaashoek, R. van Resse, H. van Staveren, K. Verstoep, and others (including one G. van Rossum). Amoeba 5.3 Documentation. The software for Amoeba was issued under a FreeBSD licence. There are many other papers, and Orca, a parallel programming language. The Amoeba Distributed Operating System. The documentation page on Amoeba, a distributed operating system that was introduced more than 6 years ago. The choice of name is interesting, considering the appeal of biological systems as sources of computational system metaphors these days. 2003-01-13Loose NotesHjemmeside/Home Page for Kristen Nygaard. There are some expressions of Nygaards that I want to remember. They are from Ian Benson1. The world language is English as spoken by foreigners 2. Time is a resource 3. Family pride cannot be denied 4. Legislation is national culture at work 5. Peer acclaim costs plenty 6. History motivates 7. Storytelling teaches 8. Mathematics is a means of expression 9. SIMULA is applied mathematics 10. To program is to understand Numbers 8 and 10 are important to me. I have a concern about not confusing programs with the abstractions they express or manifest, and at the same time I want to honor (10). How to express and convey that is the challenge I am working on. Computer TechnologyShared Systems ComputingMore on grid computingWelcome to TeraGrid. A monster grid to be built in support of major scientific computing activities.Butterfly.net: grid technology platform for MMGs and online games. Another heavy-duty application of grid computing. OGSA (Open Grid Services Architecture). A NetworldFusion encyclopedia article on the OGSA. It is pointed out that OGSA uses Web Services Description Language (WSDL) for interfaces and associated conventions. Welcome to Platform Computing - The Bottom Line in Distributed and Grid Computing. Platform seems to be plugged into the Globus Program and features its partnerships with Dell, H-P, and IBM. There is a proprietary Clusterware product. There is attention to service management and looking deeper may be useful. Self-Managed, Guaranteed Distributed Computing by DataSynapse - Homepage. Another source of distributed-computing solutions, in this case featuring self-managed operation. There is no mention of standards compliance in any form that I could find. Avaki Corporation - Home. Another grid computing software company. The goal is commercial data grid software, but it is apparently going to remain standards based, in cooperation with the Globus Project. It is going to be Java based, and they are at version 3.0. Grid-dy determination. Franklin, Curtis Jr. Grid-dy determination. Network World, 2003-01-06. Published on-line at NetworkWorldFusion. Nice review of the drive to grid computing and what it is expected to offer. Palladium: A System for Supporting Safe User Extensions Using Segmentation Hardware (ResearchIndex). Here is something that might be part of what is needed for coherent organic applications.
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