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Odd VPN Problem

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#1
Matchstick

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I've just tried setting up the connection to my home PPTP VPN and it seems to work fine over Wifi but when I try to access it over 3G it fails with the error "Server hung up. Username or password incorrect. Try again?"

I've tried both T-Mobile and Three SIMs which connect fine to the same VPN in other Android phones with the same results.

Can anyone else reproduce this somewhat strange problem ?

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#2
skipjack

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I've just tried setting up the connection to my home PPTP VPN and it seems to work fine over Wifi but when I try to access it over 3G it fails with the error "Server hung up. Username or password incorrect. Try again?"

I've tried both T-Mobile and Three SIMs which connect fine to the same VPN in other Android phones with the same results.

Can anyone else reproduce this somewhat strange problem ?


i have this problem on o2? thought it must the the carrier blocking the port. it works fine on wifi.

i guess its not working on o2, three and t-mobile? must be a device specific issue

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SGS2 (o2 UK)
ZTE Blade / Orange San Francisco (o2 UK)
Apple iPhone 3G (o2 UK)
T-Mobile MDA Vario II (T-mobile)
Orange SPV

#3
lgkahn

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i have this problem on o2? thought it must the the carrier blocking the port. it works fine on wifi.

i guess its not working on o2, three and t-mobile? must be a device specific issue


it is some bug in the device i havent tried it yet in newest e1 firmware but in older firmwares pptp vpns are not working over at&t here from same location that my sgs i works fine.
same issue hung up..

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#4
Matchstick

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K

it is some bug in the device i havent tried it yet in newest e1 firmware but in older firmwares pptp vpns are not working over at&t here from same location that my sgs i works fine.
same issue hung up..

I've had a chance to try the KE1 firmware this morning and that doesn't seem to be working either :unsure:

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#5
Claudiu S.

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I have the same problem here in Romania. I bought an SGS2 1 week ago.
PPTP VPN to the office works over wifi. Over mobile connection (3g or gprs) there is an error on server side regading some packet checksums.

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#6
Jüri Schultz

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I have the same problem here in Romania. I bought an SGS2 1 week ago.
PPTP VPN to the office works over wifi. Over mobile connection (3g or gprs) there is an error on server side regading some packet checksums.

I have exactly the same problem. I suspected that my carrier is blocking the connection. I made another test with Huawei 3G device and it worked perfectly. It seems like SGS2 radio is messing some traffic not carrier

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#7
GrimStranger

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Same problem here. I'm in Singapore with SingTel and I can't connect to VPN over 3G. On my Desire HD I have no problems at all so GS2 must be the culprit. Don't know how to get around the problem though.

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#8
sirTachyon

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I've got the same problem with my Samsung Galaxy S2 (v. 2.3.3). No VPN PPTP when I want connect via the mobile network but it works fine when WIFI is enabled. I tested it on a Galaxy S(1) also and mobile network (KPN the Netherlands) and it worked fine.
Was anyone able to resolve this issue?

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