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From: Adam Shostack <adam@lighthouse.homeport.org> Date: Sun, 10 Mar 1996 00:07:20 -0500 (EST)
Presumably, the signal has a number of charictaristics. Some of them have a central switchboard, where preople go to set up calls.
Hum, I would set-up the system to `dial direct'. Maybe I could give you this one, for systems that allow random-chat modes.
Most presumably use a mix of a UDP data connection and tcp for control functions.
OK, everything after the IP header is encrypted. I don't even know which protocol is in use.
They all consist of high volume, long duration connections (or data flows in the case of UDP.) Many probably use a standardized destination port.
OK, everything after the IP header is encrypted. I don't know which port is in use.
They might use the urgent pointer to force data up the stack quickly.
OK, everything after the IP header is encrypted. I don't know which protocol options are in use.
In short, yes the data streams can be easily found, if one can tap and grep a T3 in real time.
In short, assuming IPSEC, the data stream cannot be easily found. Slightly different assumptions led to a radically different outcome. Regards, Loren - -- Loren J. Rittle (rittle@comm.mot.com) PGP KeyIDs: 1024/B98B3249 2048/ADCE34A5 Systems Technology Research (IL02/2240) FP1024:6810D8AB3029874DD7065BC52067EAFD Motorola, Inc. FP2048:FDC0292446937F2A240BC07D42763672 (708) 576-7794 Call for verification of fingerprints. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBMUTVK/8de8m5izJJAQGOQQP/R0iXXj4hSytLhifxkxWjkCHItIpQAZvZ J73NdpVIK3EOO8dEXl4jWimh//mTmW5Zt0kIyZtRW4Sn5UlE6FHkG7fnNfgSZbzR 8fu0XOM3ScRKioNhdp0e5ECnB6WrqaSRgTH0K9e+oheAN2zVob/bTb0Gh+gSe930 Znf9388LkZ4= =JMrb -----END PGP SIGNATURE-----