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Comment Re:Practical? (Score 1) 143

How do you figure?

"This attack required over 9,223,372,036,854,775,808 SHA1 computations. This took the equivalent processing power as 6,500 years of single-CPU computations and 110 years of single-GPU computations."

That works out to about 45mil computations/sec for CPU or 2.65 bil computations/sec for GPU.

To get it done in 30 days would take a 79,000 machine CPU botnet, or a 1,342 machine GPU botnet.

Fudge the numbers a bit as they probably won't be running full-tilt for 30 days straight, and they won't all have CPU/GPU as spec'd in the attack (paper protoyped on Nvidia GTX 970 btw). Still, we're nowhere remotely close to 10mil machine botnet taking 3 years.

Comment Re:4.1.3u1 (Score 1) 127


I'm convinced that Casper Dik was just a code-name for the entire SunOS/Solaris support team, and that there's no way any one individual can know and contribute so much.

Decades later, and I still aspire to have even a tenth of a clue as him.

Comment Re:BBS (Score 1) 181

Atari 130XE? I had the 64K version, the Atari 65XE.

YMMV, but I got together with a friend a few months ago and got him to drag his Commodore 64 stuff out of the closet. We couldn't get video output on his fancypants modded C64, but his vanilla C64 worked fine, along with disk drives and every single floppy we tried (likely from late 80s, last touched in early 90s).

I've heard before that some floppy drives may have components that wear with age (e.g. rubber belts that rot and disintegrate with age), but it's worth a shot.

Comment Re:Astronomy: Astrology for Physicists (Score 1) 141

Regarding expansion, as I understand it, the effects on objects within something as small as a galaxy are insignificant compared to the force of gravity holding the galaxy together.

The greater the distance between two objects, the greater the effect of expansion; and so it does become significant when comparing two distant galaxies.

Comment Network admin? (Score 1) 293

Is this:
  "Network Admin" as in switches, routers, firewalls, etc.;
  "Network Admin" as in the often used anachronism dating from the 80s for novell admins but actually referring to what's presently known as "Windows Admin," or generically "Server Admin"; or
  "Network Admin" as in "Jack of all Trades IT guy" in smaller organizations?

If you meant the first one, which maybe you did given that you have a CCNA, then you don't need to learn Exchange and SQL server. It won't hurt, but it sure won't help as much as going for your CCNP will.

Also, consider this a branching-off point. It sounds like you might presently have a job in the "jack of all trades" category, which can give you a high-level perspective of many of the areas of specialization. Pick the one you like the most, and start learning your new specialty. Cross-training on the basics can be very valuable. Learning how to do basic scripting (perl, python, lua, whatever..) will save you much more time over the years than you spend learning it. If you encounter a repeatable process then automate it. If you don't know how, then learn how, and automate it. Sorry if I'm drifting away from your question, and into general advice for someone starting out. :-)

I also have to agree with some of the other posters, even if it seems like they're trolling. Get that A+ and Network+ crap off your resume! Nobody respects it, and it only serves to accentuate your inexperience. Start cramming and replace it with something better -- schedule your exam today if you need motivation to pick up the books!

Oh, and lastly.. Don't hang out posting on slashdot. Big waste of time!

Comment Keep it remote (Score 1) 70

Most folks I know don't want to sit next to noisy heat-generating equipment in a lab, in the uncomfortable workspaces that often accompany them.

Keep only lab gear in the lab, with enough workspace for the just the physical hands-on type of work that's sometimes required.

Invest in switched remotely manageable power strips, remote KVM/Serial., and layer 1 switches (e.g. ). SSH/RDP access to the various lab hosts for things like packet capture, traffic generation, test automation, etc. Hire a cable-monkey (no offence intended to cable monkeys) to plug everything in. Document everything very very well.

Then, outside of the lab itself, set up some number of comfortable workspaces in a quiet setting, multiple monitors, etc., for the folks that actually need hands-on.

Let everyone else access it remotely.

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