Slashdot Mirror


User: emil

emil's activity in the archive.

Stories
0
Comments
1,370
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 1,370

  1. More spiffy ideas... on FTP: Better Than HTTP, Or Obsolete? · · Score: 1
    1. Version Lockout - Servers and clients have the public key from some trusted authority. Servers and clients also each maintain a "protocol version number," which is signed by the authority's private key.
      • When a server detects a client with a new (higher) protocol version number, it records this new key, and immediately begins refusing connections from all clients with a lower protocol version number.
      • Clients also record the latest server protocol version number, but all the clients do is store this number. When a server is contacted by a client with a higher server version number, the server immediately shuts down.
      • On startup, the server checks with the trusted authority, and if its version number is old, it immediately shuts down.
      • There is a clearly defined plan of what to do when the trusted authority's private key is stolen or otherwise compromised. Perhaps there is even a schedule of key-regeneration.
    2. Platform lockout - so us 1337 unix people don't have to be bothered by the windows riffraff.
    3. Proxy support - this protocol can be easily proxied.

    Gee, I should really patent some of this stuff.

  2. I don't believe there is anonymous sftp... on FTP: Better Than HTTP, Or Obsolete? · · Score: 4, Interesting

    What I don't care for with FTP is the continuous setup/teardown of data connections. What is even worse with active FTP is that the client side of the data connection establishes server ports, and the server becomes the client (I'd like to be able to use plug-gw from the TIS FWTK for FTP, but this is not possible for the data connections). However, even when enabling passive FTP, the data connections are too prone to lockup. The difficulty of implementing all of this in C probably contributes to the FTP server vulnerabilities.

    Still, if you want both (optionally anonymous) upload ability and access from a web browser, FTP is the only game in town.

    From the network perspective, the rsh/rcp mechanism is cleaner (in that there is only one connection), but it still has the problem of either passing cleartext authentication or establishing unreasonable levels of trust with trivial authentication. In addition, with rcp syntax you must know much more about the path to a file, and there is no real "browsing."

    Many say that SSH is the panacea for these problems, but sometimes I am not concerned about encryption and I just want to quickly transfer a file. The SSH man pages indicate that encryption can be disabled, but I have never been able to make this work. SCP also has never been implemented in a browser for file transfers. I should also say that I've never used sftp, because it has so little support.

    Someday, we will have a good, encrypted file transfer protocol (and reliable implementations of that protocol). Sorry to say, but ftp, rcp, and scp are not it. What will this new protocol support?

    1. Stateless operation a la NFS and FSP.
    2. Unlike early (non-V3) NFS, selection of either TCP or UDP for lossy or non-lossy networks.
    3. Support for a centralized authentication key repository (a la Verisign), but support also for locally-defined, non-registered keys.
    4. Support for both encrypted and non-encrypted transfers.
    5. Multiple client connections per server, possibly implemented with threads (do not spawn one server process per client a la Samba, ftpd, httpd, etc.).
    6. Support for chroot operation on UNIX, without the need for implementing /bin/ls, libc, passwd, et al.
    7. And, of course, we need to keep compression.

    Boy, I never thought that I could rant about file transfer software for so long!

  3. He maintained an emacs fork; he was no slouch. on Forget Moore's Law? · · Score: 2, Informative

    While you may validly question his business acumen, he has worked with RMS, JWZ, and knows everybody. He is a reasonable coder and a team player; we need more of him.

  4. Could this be Microsoft astroturf? on Even Sun Can't Use Java · · Score: 1

    I know nothing about Java, except that, like perl (and perhaps python), I hate the sprawl.

    As a system administrator, I'll use /bin/sh first, and php-cli if I need greater functionality. Preparing php is not trivial, but once it is prepared, it is a single binary that I can place (and replace) in /usr/local/bin.

    In any case, whoever submitted this memo knew a great deal about the Sun development hierarchy, the Solaris bug tracking system and the Java bugs within it, Solaris development committees, etc.

    But we cannot discount the possibility that Microsoft obtained this information through low-level corporate espionage, and posted the memo for reasons of their own (perhaps to impact one of the many legal issues that they face).

    Granted, this probability is low, but it is not zero.

  5. Hypertransport will have an impact... on Intel's Itanium 2: Succeed or Fail? · · Score: 1

    There was an article on the Inquirer about optical connections directly to a Hypertransport bus. This will be a powerful feature for NUMA, and will make your shared memory much more feasible for distributed systems.

  6. Nintendo Gamecube is on an IBM Power chip... on Intel's Itanium 2: Succeed or Fail? · · Score: 1

    ...and I think that they run an ATI graphics controller.

  7. Notice the "ex-wife" in his post. on Grade Inflation in Higher Education · · Score: 1

    A parent's ability to influence the daily scholastic life of his or her children is drastically reduced when the two do not live together or otherwise associate on a daily basis. I am assuming that this is not the case.

    Divorce does this sort of thing. Also, from the "100 grand" comment, I assume that this is a private school. In all truth, the father is doing everything that could reasonably be expected. He cannot be held accountable if he does not have custody.

  8. Engineering at uiowa... on Grade Inflation in Higher Education · · Score: 1

    I had an EM Theory class where the professor was notorius for never giving anything below a C. The subject certainly wasn't my cup of tea, so I let it slide.

  9. DNS2 on 98% of DNS Queries at the Root Level are Unnecessary · · Score: 3, Interesting

    Really, we should have some sort of gnutella-like system for distributing zone files. The problem with DNS is that it was designed a LONG time ago before the more recent advances in P2P networks.

    There shouldn't be much argument at this point that we need DNS2 - the current system is vulnerable to attack.

    The problem is that, if you distribute zone files (or pieces of zone files) among a loosely-connected network, then you will need to establish trust. These zone files would have to be signed, and the certificate authority then becomes the bottleneck.

    It hurts my head.

  10. The quantities might be miniscule. on MIT Develops Quantum-Dot OLEDs · · Score: 2, Informative

    If they can use standard methods to lay down the cadmium (CVD or something), then the total amount of toxic material could well be microscopic.

    Gallium Arsenide semiconductors (used in diodes, microwave applications, etc.) are incredibly toxic, but you don't see huge cleanup efforts due to the material - due partly to the high price of the substrate. Once you get out of the foundry, toxicity concerns drop by orders of magnitude.

  11. HP's treatment of the Alpha is suicide. on Alpha Lives! But Who Will Market It? · · Score: 2

    I might have been convinced to support the merger if Carly Fiorina had publicly committed to producing EV8 because it was the right thing to do for DEC customers.

    Because this was not done, HP proves that they have little to no interest in their customers in general, and the merger was undertaken to inflate Carly's bonus.

  12. The MCA bus is *not* extinct. on SCO Threatens to Press IP Claims on Linux -$99/cpu · · Score: 2

    Conversely, it is alive and well in the IBM RS/6000 p-series UNIX servers.

  13. My secret Red Hat sendmail trick. on Sendmail Performance Tuning · · Score: 3, Informative

    These days, Red Hat's default install of sendmail does not accept remote connections. Red Hat tells you to use M4 to generate a new CF file to enable this functionality.

    Here is what you really do...

    Find the line in the CF file that reads:

    O DaemonPortOptions=Name=MTA

    and change it to:

    O DaemonPortOptions=Port=smtp,Addr=0.0.0.0, Name=MTA

    I picked this up from a bugzilla comment.

  14. But information CAN travel faster than light. on The Speed Of Gravity Revealed · · Score: 2

    If I remember correctly, Bell's theorem showed conclusively that information can be transmitted instantaneously (independent of the frame of reference) via interactions with particle pairs.

    Bell's theorem evolved from experiments by Einstien, Podolsky, and Rosen IIRC.

  15. Re:Apple *REALLY* needs a sub-$500 machine. on 17-inch flat-Panel iMac Dead · · Score: 2
    No, Apple's computers are priced just right. If the market wouldn't bear their prices, their sales wouldn't be up again, and PCs wouldn't be rising back up into the same ranges. Apple is, for the times, fairly prosperous and happy. Their service is rated the best in the industry. HP, Dell and Gateway, on the other hand, have tightened their belts too much for their own health. As for Compaq, well...

    Here is one of many reasons why I don't agree: Power4 wipes the floor with the best x86 that money can buy. Apple can't use Power4 because of binary compatibility with AltiVec (IIRC). Apple has made a tremendous blunder in not insisting on binary compatibility between the entire Power architecture. We as Apple customers are being penalized (in performance) for Apple's lack of foresight. We should be compensated.

    ten years of false starts

    Apple should compensate us for this also. Let's be fair.

    Why? You can't even get a used Mac at that speed for that cheap on eBay. What makes you think Apple would sell a new one for less that what a used one is worth?

    I am typing on a 333MHz iMac that I bought from ebay for $250. I could buy a PC that is 3-5 times the MHz speed (bad as that is to compare) for the same cost. The hardware is worthless; it's the software that drives the platform. I can also buy a 500MHz processor card for my iMac for $200, so $450 seems reasonable. btw, I'm posting on Chimera too.

    OS X is a desktop OS, and it is very bulky. It isn't very well suited to the stripped down embedded world, unlike Linux, which can have a very tiny footprint.

    If they can't fit it in 50MB, then Apple needs to go on a diet.

    Succinctly? What is Apple doing wrong? a) No major partnerships. b) no low-cost model to capture market share, which is needed for a large development community. c) inflated costs due to legacy and current bad business decisions.

  16. Apple *REALLY* needs a sub-$500 machine. on 17-inch flat-Panel iMac Dead · · Score: 3, Insightful

    While Mac OS X is breathtaking, and the aesthetic design of the cases is both stylish and functional, the processor technology lags far behind the x86 market, and the equipment is quite simply overpriced.

    What is more, much of Mac OS X is written outside of Apple (BSD, Mach, gcc, et al). In theory, Apple's OS development costs should be somewhat below Microsoft. There are more than a few cases where Apple's OS tools are substandard, also.

    I suggest that Apple release a $350 450MHz G3 with USB and a standard VGA connector. It could double as a gaming machine. Please bundle StarOffice, and it is also time to ditch IE (I hate popups).

    Apple also ought to investigate the embedded market with OS X, especially since Linux has made great strides in this area. A Tivo running a stripped down OS X with Apple branding would have an enormous impact on Apple's visibility.

  17. What Apple needs to do... on Build Your Own Mac · · Score: 2

    ...is develop a standard set of boards and enclosures that are interchangeable. Take the IBM PS2 case design concept to it's natural conclusion: a motherboard swap should be a 10-minute job requiring the release of 7 plastic snap connectors.

    Apple should then sell these individual parts together with complete systems. The products should be of utmost quality. The parts should be simple enough that anybody could modify and maintain them (I don't think that current SIMM designs, for example, are simple and fool-proof enough).

    When Apple has done this, and converted entirely to a component model, the introduction of x86 Macs with native OSX will not be so profound (actually, I would like to see a Transmeta Mac without all that code-morphing - the performance of a "native" Crusoe would be interesting).

    In short, Apple needs to become the Ikea of computers. There are lots of places that sell furniture that is cheaper than Ikea, but Ikea remains a very big player in its market. Apple's market share is restrained for a simple reason: at Ikea, there is something for everybody. Apple should adopt this as a corporate mantra.

  18. This is my problem exactly - how to enable X? on Largo Loving Linux · · Score: 2

    My friend got 20 of these when Montgomery Wards closed down - I think they're all NCD 200s. I've played with one, and I've seen an NCD-Linux HOWTO, but the HOWTO says that there is an X-Windows menu entry (along with Citrix ICA), but I see no such item.

    How do I get X-Windows support enabled for a stand-alone NCD?

  19. HP is taking a lot of heat over this. on End In Sight For Alpha · · Score: 2

    Remember, HP is killing off PA-RISC as well as Alpha. There have been a number of comments by HP executives recently that they don't hope to turn a profit in the enterprise business for some time because of Itanium costs.

    However, the combined Alpha and PA-RISC business is now larger than Sun.

    For HP to have executed this merger in a way that retained customers (which they have not), they would have had to deliver EV8. That they have not done so seals their fate. Carly has partnered so much that no one at HP runs the company any longer (to say nothing of what they are doing to their resellers).

  20. Perhaps there is a method to this madness... on Cancer Mouse Not Patentable in Canada · · Score: 2

    Could Canada possibly be adopting Britan's pragmatic approach to biotechnology, with an "open source" twist?

    Canada could become a hotbed of bio research if they didn't honor the patents of any bioengineered products worldwide. I hope they do this.

    Genes, just like information, wants to be free.

  21. We need a "slashdot round table" for star trek. on William Shatner Replies · · Score: 2

    Topic of discussion: best drinking story about each cast member.

    We should do it for each series.

    I wonder if they can top some of mine...

  22. So what happens if they play an mp3.com cdrom? on Finnish Taxi Drivers Must Pay Music Royalties · · Score: 2

    I've got a few laying around if they need any.

  23. The highest bandwidth possible... on Mozilla 1.2.1 Released · · Score: 2

    ...is still a UPS truck full of CD/DVD-ROMs.

  24. Re:Sun is no longer the biggest player in UNIX. on GNOME 2 to Replace CDE As Solaris Default DE · · Score: 2

    Yes, but Sun didn't announce that they are cutting Sparc. The fact that HP can publicly kill PA-Risc and Alpha and still sell machines amazes me.

  25. Sun is no longer the biggest player in UNIX. on GNOME 2 to Replace CDE As Solaris Default DE · · Score: 2

    HP handed Sun their head on a platter last quarter.

    Granted, HP did this by selling PA-RISC and Alpha. These are two dead architectures, with zero native binary compatibility with Itanium.

    HP must be pretty happy that there is a sucker born every minute.