4 ms·

SIPRNet is probably an order of magnitude larger with over four million users [1]. Even more impressive considering it isn't connected to the Internet. [1] ht

by venning 10y ago

SIPRNet is probably an order of magnitude larger with over four million users [1]. Even more impressive considering it isn't connected to the Internet. [1] https://en.m.wikipedia.org/wiki/SIPRNet https://en.m.wikipedia.org/wiki/SIPRNet

closeparen 10y ago
I wonder what exactly "isn't connected to the internet" means. Every time we build a military installation, we lay a dedicated cable from its nearest neighbor? That can't be right. Maybe it's mostly using satellite connections? Seems like there'd be many times (particularly in the US) where tunneling an encrypted connection over a civilian ISP would be worlds better than the next best option. Maybe not even at the IP level, but a dedicated wavelength on some existing AT&T fibre, for example.
- tinalumfoil 10y ago
  Seems like they have their own network of satellites and terrestrial wires, with less secure stuff going through the internet. This is interesting enough to me that I'd research further but the amount of jargon and acronyms has turned me away. > Provide DISN-provided transport and information services used for > data, voice, video, and cross domain through a combination of terrestrial, > aerial, satellite assets, and services IAW DODD 5105.19 (reference c). > Transport services include information transfer services between CC/S/A > installations, facilities, and enclaves, for connections to external mission > partner and defense contractor ISs and networks, and wide area network > information transfer. http://web.archive.org/web/20120914011329/http://www.dtic.mil/cjcs_directives/cdata/unlimit/6211_02.pdf http://web.archive.org/web/20120914011329/http://www.dtic.mi...
willstrafach 10y ago
Minor correction: it technically is connected to NIPR ("the internet") via cross-domain guards. Most information would go one-way, low to high, but very specific applications do warrant information going from Secret to unclassified in a very controlled manner, especially when it is time sensitive. It is actually an incredibly interesting topic, but it is hard to get much information on the specifics online (I assume many details are classified or at least SBU).
- venning 10y ago
  The only times I've seen high-to-low transfer was through physical media, primarily optical disc. I wasn't aware that there was any wire between them.

by venning 10y ago

closeparen 10y ago

I wonder what exactly "isn't connected to the internet" means. Every time we build a military installation, we lay a dedicated cable from its nearest neighbor? That can't be right. Maybe it's mostly using satellite connections? Seems like there'd be many times (particularly in the US) where tunneling an encrypted connection over a civilian ISP would be worlds better than the next best option. Maybe not even at the IP level, but a dedicated wavelength on some existing AT&T fibre, for example.

tinalumfoil 10y ago
Seems like they have their own network of satellites and terrestrial wires, with less secure stuff going through the internet. This is interesting enough to me that I'd research further but the amount of jargon and acronyms has turned me away. > Provide DISN-provided transport and information services used for > data, voice, video, and cross domain through a combination of terrestrial, > aerial, satellite assets, and services IAW DODD 5105.19 (reference c). > Transport services include information transfer services between CC/S/A > installations, facilities, and enclaves, for connections to external mission > partner and defense contractor ISs and networks, and wide area network > information transfer. http://web.archive.org/web/20120914011329/http://www.dtic.mil/cjcs_directives/cdata/unlimit/6211_02.pdf http://web.archive.org/web/20120914011329/http://www.dtic.mi...

willstrafach 10y ago

Minor correction: it technically is connected to NIPR ("the internet") via cross-domain guards. Most information would go one-way, low to high, but very specific applications do warrant information going from Secret to unclassified in a very controlled manner, especially when it is time sensitive. It is actually an incredibly interesting topic, but it is hard to get much information on the specifics online (I assume many details are classified or at least SBU).

venning 10y ago
The only times I've seen high-to-low transfer was through physical media, primarily optical disc. I wasn't aware that there was any wire between them.