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2600.network Dialup Service

2600.network

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Re: 2600.network Dialup Service

#71

Post by postexitus »

IgorPartola wrote: post #42

So a decade and a half ago there used to be the Google Search Appliance (no idea if it still exists). It was essentially a black (actually yellow) box with some Google magic inside that let you have Google search on premises and for local documents you didn’t want leaving your data center back when people still had their own data centers. One problem with this premise was that when the appliance was not working how i…

Erm - so as soon as it dials out, it could give a non-firewalled access to LAN, no? Maybe they also disconnected ethernet while connecting the phone cable, but not sure how effective they can diagnose a problem without the network in place.

Re: 2600.network Dialup Service

#72

Post by elliottcarlson »

throwawy6153 wrote: post #64

This is fantastic! I recently stumbled upon a now ancient publication called 2600: The Hacker Quarterly. I enjoy print and it is right up my alley. It contains many neat topics and I figure this is a good post to plug it (not affiliated, just love their minimalist design and ethos). Definitely worth a read, it covers so many neat topics from phreaking to neat BASH scripts.

You should also check out Phrack Magazine (an online distributed ezine that is still active, albeit with years between issues - they also have a 2024 call for writers though!) at phrack.org

Another older print publication was Blacklisted! 411, very similar format to 2600. I attended some meetups from both of these back in the day.

Re: 2600.network Dialup Service

#73

Post by mananaysiempre »

jojobas wrote: post #44
IgorPartola wrote: post #42

So a decade and a half ago there used to be the Google Search Appliance (no idea if it still exists). It was essentially a black (actually yellow) box with some Google magic inside that let you have Google search on premises and for local documents you didn’t want leaving your data center back when people still had their own data centers. One problem with this premise was that when the appliance was not working how i…

>No firewall rules, no unintentional leakage, no accidental logins No guarantee that the box won't poke for ways to break out either, or was there a pinky promise? I guess it was somewhat easy to disguise it, the search box is supposed to constantly poke around and index things, right?

> [A] search box is supposed to constantly poke around and index things, right?

Amusingly enough, that was Snowden’s approach, at least they way he tells it.

Re: 2600.network Dialup Service

#74

Post by austin-cheney »

What is the significance of 2600 in networking?

There is a really hold hacker magazine at 2600.com, 2600 series routers from Cisco, AT&Ts IPv6 starts with 2600, according to the comments a standard tone used in dialing, and so on.

Re: 2600.network Dialup Service

#75

Post by dagw »

austin-cheney wrote: post #74

What is the significance of 2600 in networking? There is a really hold hacker magazine at 2600.com, 2600 series routers from Cisco, AT&Ts IPv6 starts with 2600, according to the comments a standard tone used in dialing, and so on.

2600 Hz was a frequency used as a control tone by the old telephone switches.

Basically the old telephone switches would communicate with each other by sending different frequency tones or tone pairs to execute different commands, and 2600 Hz was the tone send to indicate that a call had ended. 2600 Hz was the first of these control frequencies discovered by phone phreaks back in the day and kicked off the whole phreaking scene, and so 2600 became a shorthand for phone phreaking

Re: 2600.network Dialup Service

#76

Post by 0xEF »

plapsley wrote: post #12
0xEF wrote: post #11

Earlier quoted context omitted.

Lots of fun history around 2600Hz for those too young to remember or not part of the phreaking crowd, a fairly extinct form of hacker these days. A phreaker going by Joybubbles was the first to exploit the tone by whistling. Later, a toy whistle in a cereal box was found to be able to produce the tone, leading to further exploit by John Draper, aka, Cap'n Crunch. You can 3D print the whistle these days for a bit of n…

Shameless plug for my book on the history of the subject, for those interested: https://explodingthephone.com/

Hey, I notice you sell via a variety of sources. Which one ensures you the most ROI? I've always been curious, and like supporting others, but I worry that there's so many hands between you and your customer that by the time it the money reaches you, there is not much left.

Re: 2600.network Dialup Service

#77

Post by jsjohnst »

austin-cheney wrote: post #74

What is the significance of 2600 in networking? There is a really hold hacker magazine at 2600.com, 2600 series routers from Cisco, AT&Ts IPv6 starts with 2600, according to the comments a standard tone used in dialing, and so on.

The old school phone network used in-band signaling for call setup/control. If you made long distance calls pre-90s you might remember tones after the call started connecting as an example. One of the most significant frequencies in that control setup was 2600hz (which disconnected the call in progress and left you with an open tandem trunk, giving full access to call routing functionality), made infamous by Blue Boxes, Captain Crunch, and the magazine of the same name.

Re: 2600.network Dialup Service

#78

Post by AvocadoPanic »

wolrah wrote: post #48
dylan604 wrote: post #35

Earlier quoted context omitted.

I thought VoIP codecs all chopped the frequencies that seems like it would be very detrimental to a data signal. Is the "HD" quality high enough for that, or was the analog data signal not as full frequency as I'm thinking they would be?

Most internet-based VoIP services (read: full telephone providers, not just chat providers) use the same exact G.711 codecs used in the digital portions of traditional telephone lines for normal calls. In theory you can run anything over this that could run over a long distance PSTN link. In practice most modem technologies do not handle jitter and packet loss well at all, and quirks which a human would not even noti…

v.150.1

Re: 2600.network Dialup Service

#79

Post by op00to »

Has anyone played with "D-Modem" [1]

"D-Modem replaces a softmodem’s physical hardware with a SIP stack. Instead of passing audio to and from the software DSP over an analog phone line, audio travels via the RTP (or SRTP) media streams of a SIP VoIP call." [2]

Seems pretty cool.

[1] https://github.com/AonCyberLabs/D-Modem?tab=readme-ov-file [2] https://www.aon.com/cyber-solutions/aon_cyber_labs/introduci...

Re: 2600.network Dialup Service

#80

Post by op00to »

coin wrote: post #43
alberth wrote: post #9

FYI - 2600 Hz is a common handshake tone used in telco. Hence why “2600” is referenced. https://en.m.wikipedia.org/wiki/2600_hertz

> 2600 Hz is a common handshake tone used in telco WAS not IS. It was phased out sometime in the 80s.

I remember messing with a self-made blue box at my school's pay phone in the early 90s, mystifying and amazing my nerdy friends. That fun ended when the phone company visited the school, and it was blantantly obvious who was the culprit in the rash of telephone billing crimes committed from a single pay phone, only after 3pm. No charges pressed, but I had to promise some dude in a suit I had learned my lesson. I hadn't.
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