Database Users

I can't VPN with GPRS anywhere!

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

Can't connect to WIFI at work!

I've been struggling with this for a week now. Looking at my laptop as a guide, I've got the connection on my phone set up as follows:
Authentication: Open
Data Encryption: WEP
Key is automatically provided: yes
Uses IEEE 802.1x network access control: yes
EAP type: PEAP
I was given a certificate by the IT guys and it installs fine on my phone under root certificates.
When I attempt to connect to the network, it keeps coming back with an error saying the I need to have a personal certificate to positively identify me. Hmmm...
I do have a certificate! Is there a difference between the root and personal certificates? Do I need a personal certificate for some reason or should the root certificate that I was given suffice?
Any suggestions? This is driving me crazy!
Thanks!

Same here...
I am having the same exact problem!

Me too! Except with WPA2 AES (and WPA TKIP, our AP supports both).

Did you try disabling proxy ?

I have that problem too at my work. The problem is that you will need a username and certificate so that the server will accept you as a user. Now you can only connect but you can't do anything without the username, u see

logging onto school wifi through proxy

Hi guys, I have an orange branded S710 and have been trying to use the wifi to log onto the school internet connection. My phone is able to locate the network and i can log on as there is no encryption on the network but whenever i try to log onto the internet via internet explorer i get an error message. I have tried to set proxy settings but i am not sure what to set the parameters connects from and connects to. I have acquired the gateway and port and have entered my school username and password. Also when i try to enroll my phone with the school server i get an error message on how the certificate cannot be acquired.
Any help on how i can resolve this issue would be appreciated.
Thanks

Problem with T-Mobile UK Internet

Hi
I am running the normal T mobile UK rom.
Since last week I dont receive email, my internet connection returns blank pages...
I dont know what change. Even with WIFI internet is not working.
any idea what I should check ?
thanks

Have you set the Web 'n Walk and wifi profiles to connect via your work profile, which may have a proxy server set up?
Try checking in your connection settings, make sure everything's via Internet connection not work connection. Also check the APN (it should be general.t-mobile.uk) and the username and password can be anything I think (I think the last time I typed something in, I just used tmobile as the username and password as the password, although I used to type one2one as the password because I found it amusing )
If all else fails, your rom might be a bit screwed up... Can you access the internet when you're synced via USB or bluetooth?

WM 6.1 PRO and network shares

Hello:
I have an XDA with WifI, whcih I can connect fine to my wireless network.
I can ping my server from the XDA, all works fine.
I cannot connect to any network shares on the server. I have tried the built in windows explorer and Total commander also, both have the same issue.
I type in the IP address fo the server and the share in question
e.g. \\192.168.0.1\MyShare - the connection keep timing out
I have also tried the server WINS name as well, (\\server\MyShare) I get the same problem.
I suspect it is an authentication thing - no permission, however, I never get asked for a username / password, so cannot type them in.
Anyone got any ideas about how to fix this?
Thanks