[Q] VPN Bug ? - Android Software Development

there is many post about VPN
it seems there is something wrong in VPN software.. Also PPTP or L2TP.
I use a MacOSX server with VPN server enabled.
I can connect without any problem with any laptop.
But ... with my 2.2 android (Motorola Defy)
L2TP don't find the server
PPTP disconnect immediatly after the IP (from VPN) is affected.
The is some post on the web suggesting there is an encryption problem.
does anyone see this problem ?
if yes what to do ?
Problem is same with wifi or 3G connection

Related

WM6 won't connect to PPTP VPN over gprs or wifi

Hi,
I am trying unsuccessfully to connect to a PPTP VPN using the VPN client built into my new HTC TyTN II.
Wifi - I can connect using a WinXP SP2 laptop using wifi through my home linksys wireless router (which has PPTP passthrough enabled) using the standard Win XP vpn client. When I try with my TyTN II, I can browse ok but if I set up a VPN connection I get "VPN server problems. Verify your username and password, etc"
GPRS - If I try to connect over GPRS, I connect to Orange GPRS but when it tries to connect to the IP address of my VPN server, I get the same VPN server problem error message. (As a side issue, I asked Orange to enable my account for vpn which they did, sent a SIM update and told me to change my apn to 'internetvpn' instead of 'orangeinternet')
As I can connect through my wifi connected laptop, it seems to point to my WM6 vpn client but my forum searches suggest that the WM6 client works ok. Oh, and yes, I have checked that I am using the correct vpn username and password!
Any thoughts greatly appreciated - the ability to maintain some linux servers was my main reason for getting this phone!
_______________________________________________________
Phone - HTC TyTN from Orange
Windows Mobile 6 Professional
CE OS 5.2.1620 (Build 18125.0.4.2)
Processor QUALCOMM MSM7200-400MHz
Memory 101.63MB
Setings Device Information Version
Operator version 24.181.1.612
ROM Version 1.81.61.2.WWE
ROM Date 09/20/07
Radio version 1.27.14.32
Protocol version 22.45.88.07H
Bump!!! Same problem here. I have all the proper ports open on my router and still no luck.
I've been trying to resolve this with the people that manage my vpn server which is my case is a Watchguard firewall - apparantly Watchguard isn't compatable with PPTP on WM6 and they have suggested using IPSec and have provided me with a client (not that I've got that working yet either!)
I suggest you contact the vendor of your vpn server and ask them whether they are compatable and how a WM6 client should be configured. Post anything you find out here for the benefit of others.
WM6 don't connect to VPN over GPRS/ WiFi
Friends...
I have the same problem... the VPN server is Windows Server 2003... My PDA has WM6 (with in-build VPN client)... then VPN PPTP would work OK... but What is the wrong??
Regards...
I also could not connect on vpn over GPRS and got error message, but after I tested all installed programs I have found out that my SPB GPRS Monitor was the reason for the errors. So I killed it.
Now VPN over GPRS connects and looking into register I see that I am really connected i.e. I got DNS server IP, I got name of the local network and dynamic IP for my HTC, but nothing works. As I have found out from server guys they see me but my dynamic IP is not logged in server DNS, so no program sees me and I can not work.
Can somebody help?
Same
I have a similar problem but the difference is that i don't even receive an error message. When i click connect NOTHING happens!! The wifi i am using is an open network but I must connect to vpn to connect to the internet.
Please help as i really need to get this working...
I have been trying to iron this out with IT at my office as well. I have been trying to get WM6.1 VPN working for nearly a year.
I have a TyTnII and my IT office just bought some kind of WM6.1 Motorola/Sprint Smartphone as well which they actually asked me about setting up for them.
The problem what I am experiencing is that I CAN connect to the VPN server (I use one of the TaskMan progs that has ipconfig built it, and I am getting an appropriate IP from the VPN server). BUT I can't browse ANY intranet sites via PIE or Opera Mobile 9.5. Whenever I try to browse to an intranet site I just get nothing, browser does nothing for ~10min then gives timeout error.
I have heard that this has to do with an inbuilt error in the PPTP module of the VPN client that incorrectly makes VPN server requests using the IP address assigned by the GPRS/EDGE/3G/etc. connection rather than the IP address assigned by the VPN connection, obviously will cause problems!
Anyway, we are investigating 3rd part VPN clients...
Only IPSEC works
I also made many tries to get vpn working over BT PAN profile.
The only configuration which worked for my was IPSEC with the Safenet SoftRemote-LT Client on PC.
With the windows native pptp based vpn does not work .
I got the error code 721 what means that the GRE protocol (frame type 47 on port 1721) does not pass through. This seems to be the the real problem of the packet filtering components of the WM device. The problem is not related to bluetooth or PAN Driver, because it behaves in the same way if you try to do it over USB port. No way.
You guys might want to check out my post about getting my PPTP VPN working and actually syncing ActiveSync on a fixed schedule regularly over VPN.
http://forum.xda-developers.com/showthread.php?t=428878
Getting what you want to work over VPN requires work URL Exceptions so that the traffice is properly routed.
nkitson said:
I've been trying to resolve this with the people that manage my vpn server which is my case is a Watchguard firewall - apparantly Watchguard isn't compatable with PPTP on WM6 and they have suggested using IPSec and have provided me with a client (not that I've got that working yet either!)
I suggest you contact the vendor of your vpn server and ask them whether they are compatable and how a WM6 client should be configured. Post anything you find out here for the benefit of others.
Click to expand...
Click to collapse
Watchguard does support PPTP, your IT guys just need to configure it. As for IPSec which would be awesome because there is an app call Greenbow that will connect you over 3G doesn't work with Watchguard. You can only connect using their own client for it which needs a license and isn't support on Windows Mobile. They got a hate email from me for that crap.

PPTP VPN not working?

Hi Guys,
i have access to a few VPN servers incl. my own in Europe and a few strong VPN accounts.
But once i connect with PTPP VPN - i get a little traffic back and then it stops completely. I do not have problems with other platforms (Mac, PC, iPhone etc)
It happens both on WiFi and 3G etc.
Anyone have VPN working?
(Firmware .16 UK Generic)
ohh - and L2TP can't negotiate security with my router from the X10 - rest of my devices can..
Damn this X10 is full of issues.
its broken completely
i can get it to connect to witopia via 3g, no traffic in and out
turn on wifi, wont connect at all.
VPN for X10 as it stands is DOA
seems like it is a known problem even in A2.1
http://code.google.com/p/android/issues/detail?id=4706
I made a new profile on my Mikrotik Router - that allows connection without encryption - and that seems to work for now.
But my SIP does not work - getting a lot of microphone feedback - from Fring, SipDroid and other SIP clients :-(
@klarsen
How did u get pptp working ??
my X10 wont connect to my Bintec R1200 Router
My Ipod connects without problems using Wifi and my Iphone connects over UMTS. My X10 is unable to connect.
The Buildin PPTP Client is very very trashy. There are no settings for encryption exept "on/off". PPTP uses serval encryption methods. The same with the authentication. The Error Messages are such as useless.
I Tryed to switch off encryption, tryed all authentication methods (none,PAP,CHAP,MSCHAPv1 (v2) )
What i need to enter in "DNS Searchdomains" ??
But the phone says, it cant connect to my network. I Tryed it over UMTS and over the Wifi Accesspoint from my neighbour.
Why the Linux&Co Guys are not able to write an PPTP Client like one on the Iphone or in Winmobile ? Some Touchtaps and the tunnel is Up.
I had big trouble to set up a pptp tunnel on my Nokia N800 (Linux Maemo) , too.
Greetings
Chris

PPTP VPN Problems

Hi,
i know, theres already a Thread about PPTP. But this thread seems to be death
Now the X10 is rooted. But PPTP is still not working. Has anyone got the PPTP VPN working ?
I dont mean such comercial VPN Providers.Many DSL Routers have a PPTP Server inside, so theres no need to pay for a pptp vpn account.
My Bintec R1200 Router has an enabled pptp Account which i can access from my Windows PC and my Ipod. But i never get a connection with my X10.
I´ve read many threads about pptp problems.Some people could connect for just some minutes. But i never could connect. I never got an IP from my pptp Server.
Does anyone know something more about this terrible pptp bug ?
I don´t understand why linux makes such problems with this.I sold my Nokia N800 because it was full of issues ^^ Now i got the next linux device which has some same issues,too
Please help me
Chris
Does no one can oer want to help me here ??
I´ll try a bump ^^
No one can tell me, that no one has a vpn router at home and had never tryed to connect it with the x10

Working PPTP Client for Rooted Xperia X10 ?

Hello,
In the General Section of xda-dev i never got answers about pptp vpn.
Perhaps i´ll get here some help ^^
Is there a way to get a working pptp client for my x10i.
My Phone is rooted and i can replace files if needed.
The buildin pptp client is useless and doesn´t connet to my bintec r1200 router.
My Windows PC and my Ipod are connecting without any problems.
Why google added a pptp client which doesn´t work ?
Some Users wrote they can connect with some comercial vpn providers. But i need to connect to my own Network. I don´t want to pay for something which my Router can give me 4 free ^^
My Phone does never connect to my Network. I does not matter if encryption is turned on or off.
I tryed the tip to replace some file from this thread, too.With no luck
code.google.com/p/android/issues/detail?id=4706
Has anyone get a succesful PPTP connection to a NON COMMERCIAL Vpn ?
Openvpn is useless for me, too. My Router supports als standard VPN, so i don´t want to run an additional PC to get that Phone connected to my Network.
Please Help me

PPTP VPN Connection

Trying to establish a PPTP VPN connection with my phone to my server running on my Syn 415+
The problem is that the connection from outside my own homenetwork is not working?!
When i do that inside my homenetwork there is no problem.
Strange is that a connection with L2TP/Ipsec works like a charm.
I read somewhere that it might be a bug in Android 4.4.4 that seems to be solved in 5.0-Lollipop
Couldt some one please try to make a PPTP connection and inform me if you have the same issue?
If you need more info, Please tell

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