I have that book if you want to borrow it. On Fri, Dec 1, 2017 at 12:18 PM, Carruth, Rusty wrote: > Yeah, the more I think about this, the more I think it might involve using > some ‘random’ port number on a remote server to send a packet that has > ‘something’ in it, say digitized DTMF. But the primary problem with this > approach is that its security depends ENTIRELY upon obscurity – as long as > nobody knows about it, it is ‘secure’. However, as soon as someone ELSE > knows about it… oops. > > > > Go grab the white book “UNIX Network Programming” by W. Richard Stevens > and you can write both ends in a relatively short time, other than perhaps > the digitizing and decoding part. > > > > *From:* PLUG-discuss [mailto:plug-discuss-bounces@lists.phxlinux.org] *On > Behalf Of *Eric Oyen > *Sent:* Friday, December 01, 2017 11:52 AM > *To:* Main PLUG discussion list > *Subject:* Re: Dtmf over rj45 > > > > the kernel of truth is that you can use cat-x cable to do this, but any > ethernet switches in the line will either interrupt completely or filter > out the extraneous data as noise. In either case, your "out of band" > transmissions will be eaten by the first switch they come across. > > > > -eric > > from the central offices of the Technomage Guild, the "you can't get from > here to there" dept. > > > > On Dec 1, 2017, at 8:09 AM, Aaron Jones wrote: > > > > Not sure myself honestly. The guy was using buzz words like “out of band > transmission” and claiming they could use dtmf and the intel me to send > “untraceable” data without the use of IP. > > > > I am trying to be objective about it but it seems like it wouldn’t be an > effective method of getting data out of a network. > > > > So potentially there is a kernel (heh) of truth in there. Who knows right > now I guess. > > > > Thanks, > > Aaron > > > On Dec 1, 2017, at 7:38 AM, Herminio Hernandez Jr. < > herminio.hernandezjr@gmail.com> wrote: > > Steve is right you can use RJ45 to transmit. The signal but Ethernet > switch are expecting Ethernet frames. > > Sent from my iPhone > > > On Dec 1, 2017, at 7:18 AM, Stephen Partington > wrote: > > Are you talking about embedding this sort of functional noise into a line > being used by ethernet? and yes most quality switches would try to clean up > the noise in order to secure the data unless it just created enough of an > interruption to just disrupt the connection as a whole. > > > > RJ45 is a socket type so you can wire it to do whatever you want. you can > use cat 4,5,6 cable to transport anything you want. I know multiple sites > that wired ethernet cable for POTS just because it gave them the ability to > do a number of things based on need. > > > > On Fri, Dec 1, 2017 at 6:41 AM, Aaron Jones wrote: > > Any one have any experience with dtmf (beeps and boops over phone) but > using rj45 instead of rj11? > > I viewed a claim that the intel me can produce dtmf instructions that will > be regarded as noise by tools like wireshark and can be used to transfer > things like encryption keys surreptitiously over the net without being seen > by monitoring tools. > > Essentially data is hidden in sight as noise on the line and picked up > somewhere else. > > Rj11 phone line can do this. But can it be done with rj45? Wouldn’t the > first switch it hit just smooth noise? > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/mailman/listinfo/plug-discuss > > > > > -- > > A mouse trap, placed on top of your alarm clock, will prevent you from > rolling over and going back to sleep after you hit the snooze button. > > Stephen > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/mailman/listinfo/plug-discuss > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/mailman/listinfo/plug-discuss > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/mailman/listinfo/plug-discuss > > > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/mailman/listinfo/plug-discuss >