 
atangel
Now What??
Premium
join:2002-02-18
Bronx, NY | Duh Just goes to prove that ISP Port blocking is a useless and stupid process. I mean, eventually, they'll have to block all the ports. Though everything would then be secure, wouldn't it? | |
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Nightshade
sic semper tyrannis
Premium
join:2002-05-26
Salem, OR
| Re: Duh Yup, however I got one better on ya that would be more secure though and that is physically severing your computer's connection to the internet. Yank that phone line and cut that coax and only then will you be totally, utterly secure from the nasty threat that is the internet to your PC.
Just goes to show you can't never, ever be sure when it comes to securing and locking down your machine as best as possible.
Okay now that I am out of paranoid, sarcastic mode I do have a serious question.
Just how many ports are there?
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Never Underestimate the Power of Human Stupidy | |
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pcscdma
Chocobo Chocobo Random Battle
Premium
join:2004-01-14
Winterset, IA
clubs:
1 edit | Re: Duh said by Nightshade  :
Just how many ports are there?
65536
»www.iana.org/assignments/port-numbers
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The Intel Prescott. One step closer to 50,000 watts of clear channel power! | |
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Dennis
Premium,Mod
join:2001-01-26
Algonquin, IL | wtf mate Port 69 is already in use for TFTP...why the hell would they start using it for VOIP? | |
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ropeguru
Premium
join:2001-01-25
Bridgeport, WV
clubs: | Re: wtf mate In the words of most of today's network newbies and MS trained people, "RFC? What the hell is an RFC?" | |
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Matt
Take me down to the paradise city
Premium
join:2003-07-20
Jamestown, NC
 ·North State Commun..
| Re: wtf mate said by ropeguru :
In the words of most of today's network newbies and MS trained people, "RFC? What the hell is an RFC?"
Hrmmm, I guess I would be an "MS trained" person, yet I know what an RFC is.
Matter of fact, that is a core subject of MS training.
What RFCs has MS broken?
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TripOnThis.net Administrator
"Security by obscurity is no security at all. Don't believe the hype." (c) MntlCase | |
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| | | | slasherx
join:2004-04-06
1 edit | Re: wtf mate That's because port 69 is used for tftp purposes on the CallVantage service. Read up more instead of blowing smoke. | |
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Matt
Take me down to the paradise city
Premium
join:2003-07-20
Jamestown, NC
·North State Commun..
| Re: wtf mate said by slasherx :
That's because port 69 is used for tftp purposes on the Vonage service. Read up more instead of blowing smoke.
I know port 69, UDP, is used for TFTP.
I am just questioning the usage of that port by a provider who SHOULD know it could be used for nefarious purposes.
Any VoIP provider should use an unregistered port for their "updates" until they feel they are established enough to register their own port.
Unless of course they own the network and can block the port, yet update firmware all the same.
It all goes back to the fact that you get what you pay for.
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TripOnThis.net Administrator
"Security by obscurity is no security at all. Don't believe the hype." (c) MntlCase | |
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Nightshade
sic semper tyrannis
Premium
join:2002-05-26
Salem, OR
| Hmmm...what the hell is an RFC?
It a computer acronym (gee, bet you didn't see that coming) that stands for Remote Function Call. It basically defines what the purpose is given to a port or range of ports. When you break an RFC you are plugging into a port that is not being used for its purpose.
and what RFCs has MS broken. Well, honestly....I have no clue how many because the Net+ Certified and the certification exam core test didn't have it.
But honestly, I would love to know how many just to get a good laugh. 
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Never Underestimate the Power of Human Stupidy | |
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| | | | | slasherx
join:2004-04-06 | Re: wtf mate RFC stands for Requests For Comments. | |
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Matt
Take me down to the paradise city
Premium
join:2003-07-20
Jamestown, NC | Re: wtf mate said by slasherx :
RFC stands for Requests For Comments.
Thanks. | |
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| sipuramktg
join:2003-10-03
San Jose, CA
1 edit | TFTP (port 69) is used to provision and provide firmware upgrades to the VoIP endpoint (analog phone adapter). TFTP is giving way to HTTP and HTTPS as the preferred method (by service providers) to manage VoIP end points. These protocols tend to work much better when a home or office network is supporting the VoIP endpoint connected to the LAN. CNET readers would have been better served if this information was included. | |
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rchandra
Stargate S G-1 And Atlantis Fan
Premium
join:2000-11-09
14225-2105
clubs:
| Re: wtf mate Also some network devices (cablemodems perhaps?) TFTP their configuration files from a server. Usually that would be the device using a dst UDP port of 69 (and something else for the src, meaning the dst UDP port for the server->dev traffic), but still...UDP port 69??? jeesh. What a screwup, AT&T.
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English is a difficult enough language to interpret correctly when its rules are followed, let alone when a writer chooses not to follow those rules. Blog is here
Jeopardy! replies REALLY suck! | |
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pinoy76
join:2003-11-08
Twentynine Palms, CA | I just spoke with a Vonage tech and was told that Vonage has a workaround for this issue. I just had my firmware upgraded, even though I use Adelphia Powerlink (one of the ISPs blocking port 69).
pinoy7 | |
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krobar
Is this thing on?
join:2002-09-15
Columbus, OH | uhm I thought I remembered this being posted in the morning newsbytes this morning.
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Power corrupts. Absolute power is kinda neat. | |
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nxtw
join:2003-06-25
Akron, OH | why? Why is AT&T using port 69 to begin with? Just because someone thought it was a "cool" number? | |
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Jeremy341
Bye
Premium
join:2000-01-06
localhost
| Re: why? said by nxtw :
Why is AT&T using port 69 to begin with?
Because that's the port you use for TFTP, which is what they're using it for... | |
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Drunken_Monk
join:2003-01-28
Beverly Hills, CA | Couldnt think of a Catchy Title I think its a cool number...  | |
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jdmatl
join:2000-04-27
Deerfield Beach, FL
|  Somebody Will Get a promotion
I am sure those on the project team who said udp 69 is a RFC standard are getting pink slips as we speak.
Isn't AT&T trying to "prove" to the business world they know "networking" and internet infrastructure?
Good job guys, how about for the next project try using this unknown port, tcp 21. Better yet lets use this port tcp 443 that nobody uses, cause it is really high up in the numbers. | |
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| DA
join:2002-04-13
Greenville, SC | Re: Somebody Will Get a promotion You miss the point, like the poster above says they aren't using the port for anything unusual they are using TFTP to transfer config's and upgrade's. This is normal and ATT did nothing wrong by using it in this way. | |
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| | Prototype5
join:2003-09-24 | Re: Somebody Will Get a promotion The CNET coverage is titled "Some VoIP calls being blocked"
If they are using TFTP only for firmware upgrades then why the disruption of service? | |
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| | | Bait_hammer
join:2002-12-16
Victoria, BC | Re: Somebody Will Get a promotion The port is being blocked due to a number of viruses and trojans that are setting up tftp servers on unprotected clients. | |
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pcscdma
Chocobo Chocobo Random Battle
Premium
join:2004-01-14
Winterset, IA
clubs:
| Re: Somebody Will Get a promotion Sometimes the ISP will block things that it assumes to be safe to block. If something is going out of the ISP's network and onto the next teir 2 ISP or backbone and it has a source IP address that does not belong to the ISP and vice-versa, it will usually get blocked (this is spoofing). Any stray RFC1918 addresses get blocked too (like 192.168.100.3).
Here is something marigolds wrote about MC »Re: Mediacom Techs - quick port question
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The Intel Prescott. One step closer to 50,000 watts of clear channel power! | |
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Port Blocks Disrupt VoIP
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