Using a cellphone for an office LAN
October 31, 2012 7:34 AM Subscribe
In the aftermath of Sandy, my office in Stamford, CT, is still out of elecrical grid power and out of internet. Now, the building has diesel power and is letting workers back in today, so I'm trying to brainstorm a way to get them online.
posted by thanotopsis to computers & internet (7 answers total)
Our main email server is 2k3 w/Exchange. We've got a file server on 2k8 as well. Our typical connection is via Cable Modem -> firewall -> patch panel -> LAN. Sitting on the LAN we've got a Wifi interface as well. Cable is currently out for the entire city, so I doubt we'll have any luck, there.
But, cell phones still work, with a variety of companies in the area offering 4G (no LTE) service. What are the chances of rigging up a tether and using Internet Connection Sharing on the primary domain controller (or something like that) to get a small but serviceable connection?
Issues I can see by thinking about this:
* I'd have to change the DNS for the mail server toward whatever random IP the phone gives me. God forbid it changes (which I'm sure it will), or I'll have to change the DNS all over again.
* There's no telling if the cell phone company in question will block inbound or outbound specific ports. It'll probably allow for SMTP, but I'm doubtful that it'll allow the more esoteric Windows-related network queries that go on.
* I'd have to shut off all cloud-based services (online backup, etc) or all the setup would be for naught, as those services would flood the connection.
* The first person in the office who innocently turns on music streaming gets shot.
Turns out AT&T still has running DSL over copper service in the area, and all the phones are functioning, so that would normally be an option. Asking if I could get an installer in there produced a rueful laugh from the sales rep, however, so that's out.
Any other concerns? Would this even work?