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Thread: VoIP Security? Is that "MagicJack" the reason you get the next telemarketing call?

  1. #1
    SK Member Feb 2017 W4GPL's Avatar
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    VoIP Security? Is that "MagicJack" the reason you get the next telemarketing call?

    As some of you may know, my business mostly involves doing telecom technical consultation for call centers, private communities, and hotels/casinos. So my focus with VoIP has always been at a more 'enterprise' level, for lack of a better term. But obviously I've been paying attention to various consumer offerings like Vonage, MagicJack, etc. Last night I decided to take a small sampling of both a /16 netblock of business cable service and /16 netblock of consumer cable service.

    I was astonished to see that of approximately 65000 IP address there were at least 100+ VoIP devices on the standard UDP port of 5060 and of those, I was able to direct dial.. a lot of them. I suspect if I had opened the range of ports from 5060 to 5062 and a few other vendor specific ports, I'd have found even more.

    Then I started thinking about the laws associated with the Do Not Call list and the other laws regarding accessing of systems on a public network (the Internet). And as far as I've been able to come up with, if the call is IP to IP, none of existing laws apply -- minus those pertaining to harassment (sans the technology).

    What, if anything, is stopping telemarketers from culling a list of IPs with 'vulnerable' VoIP ATAs and servers and skating around the DNC and other regulations relating to telemarketing?

    Admittedly, it seems the more professional operations like TWC and Comcast are doing it properly and their digital phone offers remain on their private network and are not accessible from the Internet (thankfully). But a lot of the more generic services haven't done this -- yet. Perhaps once a few more trouble makers realize the potential, we'll see them changing to a more secure and private solution.

    Even creepier, I (let's say in theory) would be able to inject images or videos into some of the newer IP based video phones. A new tool for perverts, perhaps? :chin:

    God knows as soon as people start taking advantage of this, Congress will overreact and write some silly new law that goes way too far, way too fast.

    So now..how many of you have MagicJack and wondered where all those strange calls were coming from? ;)

  2. #2
    Conch Master suddenseer's Avatar
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    I switched from TWC to ATT DSL, and Vonage a few months ago. I was wondering if this was possible. What concerned me more is a bunch of pimple faced hacks doing this from Russia, or such. I imported my TWC phone number. You just confirmed my concern.

    I would still be a TWC roadrunner customer if, they repaired their plant. I am a rural customer. I started experiencing severe packet loss. Long story short, I gave them 2 months to repair the problem, they would not. Their chief engineer told me there were multiple leaks picking up a FM broadcast station. They could not isolate it to one place, and were not going to replace miles of fiber optic cable to fix my problem. I am stuck with DSL for now.

    Vonage is my cheapest way to go for now. I cannot hear cell phones very well, so I am down to fewer options. So far, so good.

    cul de n8tb
    "Sadly, it always takes a few martyrs to get the ball rolling." Colonel Tim Boldman 2001
    "There are no differences but differences of degree between different degrees of difference and no difference."--William James
    "Science flies you to the moon. Religion flies you into buildings." Victor J. Stenger

  3. #3
    'Grumpy old bastid' kb2vxa's Avatar
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    "Their chief engineer told me there were multiple leaks picking up a FM broadcast station. They could not isolate it to one place, and were not going to replace miles of fiber optic cable to fix my problem."
    I see I'm first recognizing the problem, fiber OPTIC cable is immune to RF issues and the CE is clueless... or you are. (;->)
    "The universe is under no obligation to make sense to you."
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  4. #4
    Conch Master suddenseer's Avatar
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    Quote Originally Posted by kb2vxa View Post
    "Their chief engineer told me there were multiple leaks picking up a FM broadcast station. They could not isolate it to one place, and were not going to replace miles of fiber optic cable to fix my problem."
    I see I'm first recognizing the problem, fiber OPTIC cable is immune to RF issues and the CE is clueless... or you are. (;->)
    I think the cable in front of my house is hardline, not fiber-optic. Their plant leaks like a sieve. A trip up & down the road with a mobile scanner demonstrates this. I am clueless on many things, but not leaky cable.

    cul de n8tb
    "Sadly, it always takes a few martyrs to get the ball rolling." Colonel Tim Boldman 2001
    "There are no differences but differences of degree between different degrees of difference and no difference."--William James
    "Science flies you to the moon. Religion flies you into buildings." Victor J. Stenger

  5. #5
    SK member 8-14-2016 N1BHH's Avatar
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    I have Magic jack and never get any calls from telemarketers or anyone who doesn't need to call me. If you are unlisted and on the no call list, you are safe. And on top of it I don't have to spend any money on a monthly basis. I just paid for the 5 years and I'm all set.
    Clyde
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    "Island Bartender" KG4CGC's Avatar
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    Quote Originally Posted by N1BHH View Post
    I have Magic jack and never get any calls from telemarketers or anyone who doesn't need to call me. If you are unlisted and on the no call list, you are safe. And on top of it I don't have to spend any money on a monthly basis. I just paid for the 5 years and I'm all set.
    That's like what? $100, contact?

  7. #7
    Administrator ad4mg's Avatar
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    Quote Originally Posted by KG4CGC View Post
    That's like what? $100, contact?
    Under ...

  8. #8
    Conch Master suddenseer's Avatar
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    Skype you too.

    cul de n8tb
    "Sadly, it always takes a few martyrs to get the ball rolling." Colonel Tim Boldman 2001
    "There are no differences but differences of degree between different degrees of difference and no difference."--William James
    "Science flies you to the moon. Religion flies you into buildings." Victor J. Stenger

  9. #9
    'Grumpy old bastid' kb2vxa's Avatar
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    "I think the cable in front of my house is hardline, not fiber-optic."

    I was just being my usually sarcastic, grumpy old bastid self. (;->) FiOS is fiber direct while cable uses hardline for distribution and fiber for head end to head end links. You reminded me of an old QTH where I had severe scanner interference and using my 2M HT located a major leak half a block away and BTW could see the head end out the back door. Interestingly enough when I rotated my BMF TV antenna toward the leak and switched to cable mode I got free "over the air" cable. Funny thing, my 2M home station finally resolved the problem, channel 18 was extremely popular and the QRM I caused raised a storm of complaints. Soon enough they came out and replaced everything, main feeder, local feeders, cable drops and all, everybody's problems including mine solved in a day.
    "The universe is under no obligation to make sense to you."
    Neil deGrasse Tyson

    73 de Warren KB2VXA
    Station powered by atomic energy, operator powered by natural gas.

  10. #10
    Conch Master suddenseer's Avatar
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    Quote Originally Posted by kb2vxa View Post
    "I think the cable in front of my house is hardline, not fiber-optic."

    I was just being my usually sarcastic, grumpy old bastid self. (;->) FiOS is fiber direct while cable uses hardline for distribution and fiber for head end to head end links. You reminded me of an old QTH where I had severe scanner interference and using my 2M HT located a major leak half a block away and BTW could see the head end out the back door. Interestingly enough when I rotated my BMF TV antenna toward the leak and switched to cable mode I got free "over the air" cable. Funny thing, my 2M home station finally resolved the problem, channel 18 was extremely popular and the QRM I caused raised a storm of complaints. Soon enough they came out and replaced everything, main feeder, local feeders, cable drops and all, everybody's problems including mine solved in a day.
    The electronic gurus they sent to fix the problem all noted a 40db ingress @103 Mhz. I showed each one of them the TX tower for our local 102.9 shoving 50K watts my way. The tx is 2 miles away. One of the subsystem feedpoints of the fiber optic is about a half mile away from said transmitter. I have to filter cheap speakers in my house because they detect the signal, and I can hear Hip Hop on my computer speakers (I do not care for Hip Hop) I think the fillings in my teeth are detecting the signal.JK. They cannot find the leak. They are not going to do what it takes to fix the problem. I could not deal with the severe packet loss anymore, so DSL is my only affordable alternative.($15.00 /month). It's ALWAYS something.

    cul de n8tb
    "Sadly, it always takes a few martyrs to get the ball rolling." Colonel Tim Boldman 2001
    "There are no differences but differences of degree between different degrees of difference and no difference."--William James
    "Science flies you to the moon. Religion flies you into buildings." Victor J. Stenger

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