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Re: US Provisioned GSM cards abroad... SSL Issues?
On Wed, Nov 14, 2007 at 06:18:17PM +0000, Steven M. Bellovin wrote: > > "Mike Lyon" <[email protected]> wrote: > > > > > Curious. Has anyone on the list here ever encountered issues while > > traveling in EMEA accessing SSL websites back in the states while > > using an ATT/Cingular GSM data card? We are seeing some issues with > > this and were curious to see if anyone else is seeing the same issue. > > > Do you have a tcptraceroute? Might some "helpful", "transparent" proxy > be getting in your way? (You don't say anything about what your issues > are.) Such broken "transparent" proxies seem to be very common on GSM carrier's data networks. I've even recently seen problems that look like a re-direct loop without ever really hitting the server, with a pre-paid SIM from Yoigo (a Spanish carrier). Mind you, this was a complex SSL setup involving client-side certificates, and "normal" SSL sites. Solution: set up a "good" squid proxy somewhere, perhaps on an uncommon port, to bypass the "evil" proxy. Next problem: empty bank account when the roaming charges come home ;) Cheers, -w