Re: Sprint 3G/4G PPTP VPN connectivity

[Cameron Byrne <cb.list6 () gmail com>]

On Mon, Sep 26, 2011 at 10:30 AM, Seth Mattinen <sethm () rollernet us> wrote:
> On 9/26/11 8:36 AM, Drew Weaver wrote:
> > Has anyone been able to pull any magic off that allows PPTP connectivity over sprint's 3G/4G wireless network?
> >
> > I assume they're just filtering it flat out, but before I contact them I wanted to see if anyone has found a 
> > resolution on their own.
> >
> > I have several Nexus S 4G devices which are unable to get PPTP connections over 3G/4G but if you enable WIFI it 
> > comes up instantly.
> >
> > I've been researching this off and on all weekend but wondered if anyone else had run into this issue.
>
>
> I use often use PPTP on my original HTC EVO. Just tested it now and it
> worked. 3G only, no 4G in my city.

I have seen MTU issues with PPTP on cellular networks before with
Android.  You might want to try clamping the MTU down on the server
side.

Cameron