I'm trying to establish a VPN (PPTP) connection to my office via GPRS, without any success. When I click to activate the VPN connection, a GPRS connection is established, then it tries to connect to the VPN address (203.xxx.xxx.xxx), after about 30 secs it comes up with the following message:
"VPN server problems. Verify your username and password, and try again. If the problem continues, turn the device off and try again."
I've turned the device off and tried again, to no avail.
I've also done a search on the forum and notice some users having similar problems but no solution has been posted yet. So this is a bump for all of us who are having this VPN probs.... BUMP!
Hi,
I am facing the same problem. Initially, I thought that my Telco was blocking VPN traffic. I have tried on two different telco network and none worked. Has anyone got VPN working before? If so how? FYI, I am trying to VPN into an MS ISA box running PPTP CHAP2. My VPN is working because user on landline dailup or broadband can get connection without problems.
Regards,
Kueh.
Related
I'm trying to VPN using GPRS to several networks which I have access to but I can't seem to be able to VPN them with my PDA2K. I can VPN them easily with no special configuration with my XP.
My i-mate keeps trying "Connectioning XX VPN..." and then aborts after about half a minute saying to check the username and password. The username and password are correct.
I called my cellular provider and they said that I should be able to connect to a VPN only if 'UDP Encapsulation' is defined on the VPN server?!?!? Well.. What is this thing? I'm trying to connect to big corp VPN, they wouldn't even listen to 'special requests'. I tried to connect to 4 different VPNs and I could not connect to any single one of them!
I really need that VPN connection via GPRS with my PDA2K. Any help would be more than appreciated. Maybe a different client than the built in VPN client of the WM2003SE ?
Thanks in advance.
Sorci
anyone?
bump for help. this gotta be a common prob.
Your GPRS connection will be subject to some form of NAT (Network Adress Translation) through your provider. VPNs don't get along well with NAT as the firewall doing the address translation modifies the packet header after it has had it's hash value calculated by the client (in this case your PDA). The receiving firewall will reject the packet as the hash values for the (now modified) packet don't match.
UDP encapsulation gets around this by encapsulating the encrypted and authenticated (secure) packet in a UDP packet which will be happily modified by the NAT'ing firewall. The receiving firewall will decapsulate(is that even a word?) the UDP packet and process secure packet inside as normal.
James
Thanks a lot Jamz for the thorough detailed info. I appreciate it.
So what's the fix? I tried several other VPNs and was unable to access them as well.. I can't just call all these providers and make some strange requests for a 'one guy with a pda2k and a gprs connection' that wants them to change their VPNs, enabling or disabling protocols or port.
Any other solution?
sorci said:
Any other solution?
Click to expand...
Click to collapse
Are you sure you're using the built-in VPN client in Windows, and not something like a Cisco VPN client?
You could try something like the Movian VPN client (not sure this is still made). I've used this previously with a Cisco VPN and it is fully configurable to handle multiple VPN types.
I've got a similar problem. Am trying to set up a temporary GPRS connection into my work LAN (I work for myself but 2nd child due shortly so want to be able to connect in from home for a couple of weeks only). I've got MS Win2000 Server set up to accept incoming VPN connections and it works fine on a dial-up connection but refuses to authenticate my username/pasword whenever I try to get the GPRS working.
As it's only going to be used for a short period of time, I'm loathe to spend out on any specific hardware/software but if anyone's got any suggestions, I'd be grateful.
If it helps, the LAN is behind a Netgear DG834GT ADSL modem/router/firewall and VPN PPTP and IPSEC are allowing in and out on it. The server is on a static IP address in the range 192.168.99.x.
GPRS Connections and VPN
With O2 you have to aks for VON connectivity to be enabled and connect to vpn.o2.co.uk instead of mobile.o2.co.uk. (by the way you can't access the web whilst connected to the vpn.o2.co.uk AP)
I suspect that most providers have simalair requirements
Dave
:x I cannot seem to get the VPN side of things working.
Has anyone tried a VPN using WiFi ?
I can connect to a WiFi Access Point and browse the internet. I then try to establish a VPN connection to my network using the IP address of the VPN Server, get prompted for the user credentials, and the XDA tries to connect and just doesn't, no errors. The VPN Server is working, as I have tested the same settings using an HP Ipaq 5550.
Any suggestions ?
VPN Fault
O2 Data Support have confirmed that this is a bug.. Damn ! :evil:
I am trying to establish a VPN connection but cannot get the connection to work.
I am using the built in MS VPN client of Win Mobile v5.0 (5.1.1700 build 14352.0.1.0)
I am having real problems getting a VPN connection set up with our network.
I have tried both PPTP and L2PT
When L2TP, I was authenticating with a preshared key
Firewall logs show PPTP negotiation successful, and issues a VPN IP address to the device
It can ping the firewall external interface, but times-out trying to reach an internal address
The VPN session is established, but the firewall logs don't register either deny or allow traffic for each internal ping request, rather the firewall packet error count increments for each failed attempt.
Any help is greatly appreciated.
I had problems with PPTP - gave up
I hate the way Windows mobile labels connections.
I connect to many customers with PC Anywhere, VNC, SSH etc and I have access via serveral different windows PPTP VPN.
Like you I setup the details in connections and try to dial.
Nothing seems to happen. The connect option does not change to disconnect. So I assume it is not connected.
I have a feeling these connection do not work over WIFI. and perhaps work over T-mobile 3g only, to maximise data revenues.
Seems very buggy to me. I would really like someone to post a working example/Instructions. Can I get a refund on my MDA PRo?
MS please note it is not a connection to my work or an internet connection it is to a customer for remote support, likewise I often connect remotely to my home via PPTP from my office.
confirmed VPN works over t-mobile 3g not Wifi
SEems the VPN links only work over 3g not Wi FI.
I'm using a PPTP connection over either 3G of WIFI depending on te active connection.
- When WIFI is active the PPTP connection connects using WIFI (I can switch off the phone, so it must be using that one)
- When no WIFI connection is active it automatically connects to 3G first, and than starts the PPTP session
In network management I'v set:
Internet:
Internet (the one containing the 3G connection)
select 'this network connects to the Internet' on the proxy tab.
private network:
My Work (the one that contains the vpn connection)
do NOT select 'this network connects to the Internet' on the proxy tab.
So as you can see, nothing special (I'm using a Qtek 9000 with standard Wm5 ROM)
Need some advice on using VPN via GPRS.
Have an O2 mini s which connects to GPRS with no problem and lets me surf the internet. When I try to connect to my work VPN I get no indication at all, no attempt to connect, no error message.
Have setup the VPN connection with my works IP address that works fine from my desktop PC. The vpn type is PPTP everything else is default.
Any clues or pointers would be gratefully received
Hello,
Well I hope I'm putting this post in the right place, if not please move it. I have a 8525 with cingular. I need vpn access for my office connection from my laptop. We use a Fortiwifi 60 with the Forticlient software for VPN access. I used it with the old wireless modem settings on my 8525 and it worked with both wap. and isp. I recently upgraded to the new offical rom and used it fine (without trying the VPN access) for a few weeks. I went on my first trip last week and could not connect to the vpn. It would verify PSK and X-AUTH but fails to pull an ip address. I tried it with a static ip and it failed as well. When I check my connection monitor it shows no data coming back from my vpn gateway. I tried it on the hotel's internet and it works fine. I also tried another wifi signal and it worked as well. I changed the media net settings to go through isp instead of wap but that didn't help. Does anyone else have this problem with there VPN settings? I wonder if it is the new type of connection sharing or a change to the Cingualr network? Any help would be appreciated.
Thanks.
dechutes said:
Hello,
Well I hope I'm putting this post in the right place, if not please move it. I have a 8525 with cingular. I need vpn access for my office connection from my laptop. We use a Fortiwifi 60 with the Forticlient software for VPN access. I used it with the old wireless modem settings on my 8525 and it worked with both wap. and isp. I recently upgraded to the new offical rom and used it fine (without trying the VPN access) for a few weeks. I went on my first trip last week and could not connect to the vpn. It would verify PSK and X-AUTH but fails to pull an ip address. I tried it with a static ip and it failed as well. When I check my connection monitor it shows no data coming back from my vpn gateway. I tried it on the hotel's internet and it works fine. I also tried another wifi signal and it worked as well. I changed the media net settings to go through isp instead of wap but that didn't help. Does anyone else have this problem with there VPN settings? I wonder if it is the new type of connection sharing or a change to the Cingualr network? Any help would be appreciated.
Thanks.
Click to expand...
Click to collapse
I had the same problem with another IPsec client with this ROM. For some reason I could not get Internet Connection sharing to work when connected via USB. Bluetooth pan worked. The VPN client was not binding to the ICS/usb adapter. I have since upgraded to WM6...Sleuths ROM...and USB/ICS now works.
Well I tried the phone on another computer and the vpn works just fine. I guess it's something on that computer. Anyone have any ideas? I'm going to try reinstalling the virtual adapter in hopes that it is a binding issue (thanks to tco for that). I'll let you know if I figure it out.