Archive for the ‘ networking ’ Category

Garbage antivirus

A woman brought her laptop in running Norton 360 and Moon Secure antivirus. Moon Secure? Sure, Moon Secure.

When I saw this my first thought was, “Gross Norton!” but my second thought was if the program is legit. It is, I suppose. It’s based off the ClamAV virus definitions. ClamAV doesn’t do on access scanning, that’s what this Moon program adds. It’s limited in user control, there is no GUI, and it’s based on Clam… Why is she using this? Because someone said it was awesome. +1 for underground security solutions.

Removing it fixed the problems she had. I would have removed Norton and installed MSE but people get upset when you remove the bloatware they paid for at Best Buy.

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Something for nothing

I’m really beginning to hate everyone with a computer problem. They come in or call because they have a problem, but as soon as you answer the phone or show up it’s your fault.

Never mind that they haven’t backed up since 2008 or their files were on a server that did not have a raid or tape backup. When that server’s drive fails, you’re the bad guy for taking an hour to migrate 40,000 emails to their new domain profile. Oh, and those files, the ones that are gone forever on the dead server, “They were here before you did whatever you did.”. Yeah, creating a PST deleted the files that you in no way were accessing today. And your keyboard is full of food crumbs, you’re nasty.

Doctors and lawyers are the worst. I just recovered your failed drive, took 4 hours to find out why your pc was randomly crashing. I only charged 1 hour, $50 an hour. Geeksquad charges what, $79/hour + $99 for data recovery? And you ask why you had to pay for the hard drive. Really? It’s my fault, I should buy your hard drive? I found out that my company replaced the drive a few years earlier, take it up with Seagate – My warranty is 30 days.

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Got an 8 to 5

This post military job is much different than what I expected. The military was never driven by profit, or efficiency, or sense. Repairs were paid for by an unlimited source of money that came from somewhere. Problems were fixed after normal working hours. And no one really wondered why something took so long.

I used to get a lot of “while you’re here” requests. Like, hey, while you’re here to fix that network thing, come fix this printer. I still get that, except now it’s followed by “why should I have to pay for all the time you were here??” I didn’t fix anything in your office for my own amusement, ma’am.

Some customers are great, others I dread. That part is the same. I do have to call them customers now as opposed to users, apparently “users” is implying something.

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FBI tracking reddit

Student finds FBI bug. It was apparently racial profiling the comment left by this guy’s friend that led to him being tracked.

Basically, he brought his car in for maintenance and the mechanic found a GPS tracking device. The best part about this is that he announced that he was going to sell the tracking device through craigslist on reddit, upon doing so half a dozen FBI agents showed up at his door to collect the device.

They could have left the story a rumor, mere speculation; but they didn’t want to lose the tracking device. To recover it they exposed their investigation. These gadgets must be very expensive.

Now we know the FBI gets paid to read reddit, and I think they’re hiring.

Backdoor Obama

I first read about this on Mr Schneier‘s blog, now reddit is talking about it.

Since nearly everything is closed, we only find out that the government has put a backdoor into a device when they or attackers misuse it. So I’m glad they make these bad decisions out loud or we’d never know.

It’s not like they really need backdoors.

Rainbow tables and poor old md5

A stored MD5 hash used to be as good as dirt. But now you can search Google and reveal what f7319efdeb516bb7fcd2d8010ceaae1b actually is. MD5 is not reversible, but the existence of hashes and plain text stored online make common phrases recoverable. MD5 is tons better than nothing, so there’s no reason not to use it, but if one of the SHA hash algorithms or another 160-bit hash are available they should probably be used.

This applies to all hashes, not just MD5. Simple fix is storing the password with a salt. Or even simpler since they are linked, store username and password hashed together.

My wifi blew away

Wifi can’t actually blow away. But there’s been a sand storm that lasted from last night until just now. The sand kept the wifi from working (I guess). Africa needs grass or something, these sand storms are getting out of line.

There must be sand in the rain here as well. A rain storm just took out the wifi for a few hours.

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Upgrading my ipod, what could go wrong?

ios-4I upgraded my iPod Touch to iOS 4.0.2. Now I can’t sync my apps due to an internal error. Oh apple… you impress me less every day.
More complaining to come.

… Now I can’t sync due to a required file not being found.

… Now, endless stream of errors.

Restarted iTunes, I was able to restore again and now I have my apps, all my pictures and even my notes; but I don’t have any music, so I’ll try to sync again.

Seems to be working… Success! My iOS 4 upgrade only took maybe 20 minutes, I heard it took hours and had to be run overnight. I did the manual upgrade, downloaded iOS 4.0.2 at work (trying to do it on the navy’s wifi would be a joke) then held shift + clicked restore in iTunes. Also, you need an active internet connection to do the upgrade. For the last 3 days I haven’t had internet access so Apple’s attempts to “call home” failed. I guess Apple wants to prevent jailbreaking so it has to check in, because people that jailbreak use iTunes.

I only got about 50 errors and had to revert to google 4 times, that would make this the smoothest Apple upgrade ever.

Now I just need to see how it affects battery life.

- After 1 hour, my battery indicator is still at 100%. This only due to the ipod freezing up, it’s really just “stuck” at full. I’m again impressed.

- Stayed in standby all night, had a full battery bar in the morning then used about 30% of the battery during 3 hours of wifi. Seems like a good update.

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Recent CCNA exam

ciscoI was a little surprised after finishing the CCNA 640-802 exam. It’s an exam for a technician with 6 months experience yet it covers nearly everything. No technician is going to encounter EIGRP, OSPF, Frame Relay, enterprise wireless, IPv6, etc etc in their first 6 months. The range and depth of the study material had me convinced that this was going to be an in-depth exam.

What surprised me was that the exam barely touched on all the topics you’re required to study. The OSI model questions were basic, I did not have to subnet anything, the OSPF questions (that I studied the most) could have been answered after only skimming the chapter in the Sybex textbook. For example, an OSI model question would be along the lines of, “Which layer converts electrical signals into digital bits?” I studied for this?

I had 50 questions on my version of the exam, you get anywhere from 40 to 60 questions and you have 90 minutes to finish. Once you answer a question you cannot go back to it.  You can only progress forward through the exam. I do not think the rumors of “adaptive testing” are true. Some people say that if you miss a question of a certain topic then you will get more of that same topic, seemed to me that all the questions were predetermined.

The best resource for the test is the CCNA Video Mentor series and book from Cisco press. I had the Preplogic material as well, not so much help there, and I forgot to study the 15-minute guide of theirs right before the test. You can study the pass4sure material only, but I hope they change the exam right before you take the test (you paper cert).

The labs on the exam were easy and I recommend looking at www.9tut.com to get an example of how the labs will look.

A router simulator would have been nice since it’s been 3 months since I’d actually logged into a switch, but the 6 years of previous logging into switches made up for that… for me at least.

 
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