Database Users

How to tunnel UDP over ActiveSync?

Hi...
several protocols utilize UDP which is blocked over ActiveSync. Now it would be great if one could implement a simple tunnel to make SIP (VoIP) work.

hmm... interesting...
buzz

I want to know, if someone get the answer

Today I found out I have a process running called "udp2tcp"... did MS program a service to circumvent their own ActiveSync restriction? Unfortunately it's just listed on an old useless MSDN page.
Nevertheless I found this udp2tcp and tcp2udp-project. Maybe vijay could compile an ARM and a x86 binary and we're done!

Chatty, I'd love to be involved, but I'm extremely busy this weekend. The app requires a number of support includes which I'll have to track down, but I don't imagine it will be a plug and play job. Might take some time...
Code:
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/select.h>
#include <sys/wait.h>
#include <netdb.h>
#include <signal.h>
Anyone else got any time to look into this?
V

Chatty said:
Hi...
several protocols utilize UDP which is blocked over ActiveSync. Now it would be great if one could implement a simple tunnel to make SIP (VoIP) work.
Click to expand...
Click to collapse
There is a way. On your PC,
1- create a guest account
2- create a fake email account
3- install active sync
4- connect your device
5- Activesync will run and then retrieve the device information and then it will runa wizard for syncing; cancel this wizard; Activesync will tell you that syncing has stopped but you can still explore, add/delete programs from your device; but what it does not tell you is that a network conenction has been created and your device has full access to the internet through your PC. To verify that get a console widnow and type "ipconfig" it will print out the address of your machine and the IP address of your device. Cool....
Hope this helps.

Chatty said:
Hi...
several protocols utilize UDP which is blocked over ActiveSync. Now it would be great if one could implement a simple tunnel to make SIP (VoIP) work.
Click to expand...
Click to collapse
Hi Again,
forgot to add that you can also use my method described in earlier post with bluetooth - so you dont have to physically connect to the PC. the difference is that you start active sync from the device (connect via bluetooth), thats it. and now you have wireless network through bluetooth.
Hope this helps.

@redjupiter: Since you seem to be new: You don't need your actions regarding email and stuff. The internet connection is always setup when the ActiveSync connection is setup. My original post will give you detailled information about what is possible and what is not (UDP for instance).

Chatty said:
@redjupiter: Since you seem to be new: You don't need your actions regarding email and stuff. The internet connection is always setup when the ActiveSync connection is setup. My original post will give you detailled information about what is possible and what is not (UDP for instance).
Click to expand...
Click to collapse
You are right I am new - was trying to share no more. So I foudn the hard way hwo it works still I cannot use internet connection if the activesync is in sync mode!! do you know why? . I will re-read the link.
great link ...
thanks

Chatty said:
@redjupiter: Since you seem to be new: You don't need your actions regarding email and stuff. The internet connection is always setup when the ActiveSync connection is setup. My original post will give you detailled information about what is possible and what is not (UDP for instance).
Click to expand...
Click to collapse
Ok I got it. It is a developer issue. However, a uestion comes to my mind they are talkign about pass through - is this what I am using? cause out of the box does not work unless I tell activesync not to sync with my device. or are they talkign about devloping applications and explaiing hwo activesync works internally?
As you said I am a newbie wanting to learn that's all
thanks

OK, So activesync creates a nework for the device out of the box. Why my machine does not do it? I'll be damned if i don't find out and I did.
My machine has multiple network interfaces other than the wireless/wired router. Two machien goes to the internet via the router and the rest ( 4) go through a switch fonnected to my machine. I have multiple internal networks (my work).
The thing is Windows XP Home Edition creates what it calls a mini-bridge where you can dump networks (interfaces) in it and it will take care of traffic routing among the networks (those that you leave out of the bridge their traffic will not be redirected). So the mini bridge acts as a router.
here where i found my problem, the router refuses to add device network (created by Activesync) to the bridge. Activesync breaks completely and i have to reinstall. Anyother network is fine, modems, PAN, Firewire ... I can add them all.
So there was a network for the PPC but Windows is not forwarding the packets.
Your link gave me the clue ...
thanks ... OK, enough waffling ...

PC<->PPC application comms concurrently with GPRS conn

Hi,
I am trying to develop an application with both PC and Pocket PC components.
The PC and PPC need to exchange data whilst the PPC (eg XDA) has an active GPRS connection.
I first tried using evc and RAPI to allow the PC and PPC components to talk to each other. However RAPI relies on ActiveSync and it seems you cant have an ActiveSync connection to the PC (eg over USB) at the same time as a GPRS connection.
So
1)Am I right that ActiveSync at same time as GPRS is impossible? (And hence RAPI...)
2)What is the easiest way to do PC<->PPC comms without ActiveSync, on the widest variety of PPC devices?
3)Is there a way to do this without writing PC and PPC sides for all of
i) Bluetooth
ii) USB
iii) Serial
It seems like a lot of hardwork to reimplement all these, but some models have BT, some only USB etc etc
Any help appreciated...
Regards,
Giles.

hey,
im also trying to write some client -> server software for my mda/pc. Ive managed to narrow it down to two technologies (excluding activesync cos it needs to be portable)
- Web Services
- Client Server Model (tcpclient and tcplistener)
webservices are good as they will run on any net connection with port80 open, pretty fast and versetile but have some bad flaws. u need some back end data store (like a mysql database) as data is not persistant on then... also u cannot "push" from the server to the device (this may or may not be an issue)
the tcpclient model is starting to appeal to me in a number of ways. u can define your own light-weight protol (SOAP has a nasty habbit of bulking the objects out and GPRS costs!)... i started to write some little test apps and so far its looking good. Ive wrote a very tiny server that runs on windows and has a thin client running a threaded tcplistener and a mysql backend datastore. The test mobie simply constructs a tcpclient object and writes a string "hello world" to the port, which the server picks up and displays in a messagebox... so far this concept is working really well, and i have more control over the serialisation and communication of the objects and types.
i hope ive helped u in some way hehe
Will

i've looked everywhere, seriously. -remote desktop

any detailed how to guide?, i can do it, i'm fairly tech savvy, so i just need to kneed out a few things. maybe if you caould start from the beginning and i can see where i went wrong.
logmein.com works, but i want something more personal, just bewtween the computer and my phone. somerthing that looks good and scales full screen preferably.
please guys?, point me in the right direction.. all the posts just keep saying to search and there's lots of info, but there's no step by step guide.
thanks guys!

ok i got it going.
first go to the computer you want to connect to and go to control panel / system
click on remote, enable remote users
go to start menu, run. type cmd
in command write "ipconfig /all"
take note of your ip address
on your phone go to remote desktop,
computer = your ip address
username = (go to startmenu, control panel, user accounts) use one of those names.
password = blank unless you have a password.
domain = i left blank.
connect full color unless it doesnt work for you
if you can connect and you get a password error
type the error you get inot google and you should get a fix as your first link.
try that.
blam, remote desktop, it's awesome.

Nice how-to...
this is the most succinct tutorial on how to do this that I've seen. I'm still having trouble, though. I get the "Cannot connect. Likely reason are: 1 the remote comupter is not set up for this. 2. Reached the maximum number of connections. 3. A network error occurred while connecting."
I have set up the XP PC, & taken down all firewalls. I only have one user account and it has a password. I've even tried using Hamachi with one of their VPN ip addresses (awesome and free for pc2pc). I 've combed trhough my router settings too, and tried to clear everything there, too. I can RD from an XP laptop, so ti seems to be something on the unit, to me. I've also setup file sharing w/ Total Commander (it's served my purposes amply).
I really have googled & googled & googled. If anyone has any idea what is going on, I'd be grateful for some ideas.

Have you enabled the RDP on the host computer?
Right click my computer
Properties
Remote
Then enable allow user to connect remotely.

Will only work on XP Pro, or Vista if you choose to allow older clients which they scaremonger you against by saying it's less secure.

Danke!
I've been scared away from Vista for the usual "new" OS reasons, but perhaps it's getting to be time for me to haul my old conservative back-end into the modern world.
Thanks so much for taking the time!
(and to Biohead: yes, I followed the instructions I lauded so vehemently.... ???)

you're running vista?
and you haven't been able to connect still, right?
sorry i could walk you through xp, but man vista sucks, i wouldn't touch it with a 10 foot pole.

i'm setting up remote desktop on my iphone
hahaha totally referred to this guide

and it sucks, so i'm sticking with vnc
man, i miss my exec/universal

dutchschultz said:
any detailed how to guide?, i can do it, i'm fairly tech savvy, so i just need to kneed out a few things. maybe if you caould start from the beginning and i can see where i went wrong.
logmein.com works, but i want something more personal, just bewtween the computer and my phone. somerthing that looks good and scales full screen preferably.
please guys?, point me in the right direction.. all the posts just keep saying to search and there's lots of info, but there's no step by step guide.
thanks guys!
Click to expand...
Click to collapse
Hope this helps
http://forum.xda-developers.com/showthread.php?t=366312
http://forum.xda-developers.com/showthread.php?t=294524

orb3000 said:
Hope this helps
http://forum.xda-developers.com/showthread.php?t=366312
http://forum.xda-developers.com/showthread.php?t=294524
Click to expand...
Click to collapse
you, my friend, are awesome

A possible solution for those of us on T-Mobile's standard web n walk
Sorry to resurrect this thread, but I thought I'd post my experiences here in case anyone else (like me) searches for a solution to enabling RDP on T-Mobile (UK at least).
I was having the same problem with remote desktop, it saying that the server was not available. I phoned up T-Mobile's helpdesk as recommended here and after getting past first line support (who didn't know what remote desktop was, and tried sending new connection settings to my phone to resolve the issue) I got through to someone who knew what they were talking about. Turns out that I'm on T-Mobile's "basic" or "handset-only" web-n-walk package, and it's not possible to use RDP on this. I assume they block the relevant ports. They told me that I could pay an extra fiver a month to upgrade to a version of web-n-walk which can handle RDP.
Well I told them I would think about it, but instead tried to find a way around it as the one or two times I need to use RDP are certainly not worth a fiver a month. My solution is probably only suitable for the more techy of us, but without much work and with no prior experience I managed to set up a SSH tunnel using FreeSSHd as a server running on my windows server (although a normal windows box should work fine - http://www.freesshd.com/) and zaTunnel as a client on my phone (http://www.zatelnet.com/zatunnel/main.php). Both programs are free.
Basically my phone takes all RDP connections and tunnels them over SSH to my windows server, which then turns them back into RDP connections. T-Mobile have no idea I'm using RDP, and if they block the SSH port in the future I can always change FreeSSHd to run on port 80 (for web). This will also work for other protocols T-Mobile might be blocking (FTP springs to mind).
Just thought I'd post this in case anyone was in my situation of needing RDP on their standard web'n'walk.
Edit Sorry posted this in the wrong thread! Will leave this post up however just in case someone finds it useful

echolock
Many thanks for the above have been searching everywhere for a fix to this. I am the same as you T Mobile (UK) and can't connect.
Could you give some additional advice as how you got the RDP to work.
For the record I can connect by Wi-Fi and by using a PAYG sim from a different carrier. However, I am on a contract with T Mobile and don't want to carry a different sim just to use the RDP.
I have installed both apps. I can make a connection from zaTunnel on Port SSH:24 to the freeSSHD server (SSH - listening on port 24). Other than adding a User and changing the default port to 24 there are no other changes I have made in freeSSHD.
Under the connections tab in zaTunnel I have left Network: Automatic with the other settings relevant to make a connection.
Under the ports tab of zaTunnel I have
LP> 3389,
IP/URL . IP of the desktop I want to connect to of 192.168.1.10
>RP 3389
When I the start the Remote Desktop app under my Windows Mobile 6.1 it indicates connecting the fails as before.
Also forgot to mention freeSSHD is running on the desktop I want to connect to.

Sure thing.
When you run Remote Desktop under Windows Mobile, make sure you connect to "localhost" NOT to the IP of the desktop you want to connect to.
Your other settings seem correct to me.
To attempt to explain a little, basically what happens is as follows. For simplicity's sake I will have three machines, your phone, your SSH server and your RDP server (although the latter two can be the same).
On your phone:
1) Remote Desktop connects to localhost on port 3389.
2) zaTunnel is listening on localhost on port 3389. It echos all commands sent to this port out on port 22 over your cellular connection to your SSH server, also providing details of your RDP server and port.
On your SSH server:
3) FreeSSHd receives the commands sent over port 22 and is told by zaTunnel to convert them to commands sent to your RDP server using port 3389.
On your RDP server:
4) Remote Desktop receives a normal RDP request over the normal port from your SSH server.
5) Responses are sent to your SSH server.
On your SSH server:
6) FreeSSHd receives the RDP responses, and sends them back to your phone over port 22.
On your phone:
7) zaTunnel converts the commands sent over port 22 back into RDP commands sent over port 3389.
8) Remote desktop receives a response from zaTunnel and thinks it's connected directly to an RDP server on localhost. In actuality it's connected to your RDP server using an SSH tunnel provided by zaTunnel and FreeSSHd.
Hope this makes sense, I'm not very good at explaining this!

Ah found another problem. The IP of your desktop you say is 192.168.1.10 - this is a local IP address so will only work on your local network.
Go to a website like http://whatismyipaddress.com/ from the machine you run SSHd on to find out what your current "external" IP address is. Bear in mind that most home broadband connections have a "dynamic" address which is allocated to you and might change from time to time - you can always use something like http://www.dyndns.com/services/dns/dyndns/ to set yourself up with a static hostname, and run a program on your machine which updates your hostname with the correct IP address every time it changes. Some routers have this functionality built in.

Thanks for the quick response and explanation.
Between posting and reading your reply I had worked out the RDP app needs the localhost or the IP 127.0.0.1.
I had come back here to post, so others would know in future.
Your other point you raised about the desktop IP. I have used this only in the ports tab on zaTunnel. The connection tab has a proper mydomainname.com address. (Provides email and a webmail interface).
Anyway, can connect now and thank you again in solving this for me. (If your in Leeds I will buy you a beer).

Ah yeah the 192.* address would work on the ports tab, fair enough. Might be worth pointing out if others read this that this is only the case if the machine you're trying to RDP to is on the same local network (or the same machine) as the machine you have FreeSSHd running on.
But good to hear you got it working Now hopefully T-Mobile won't cotton-on and decide to block port 22 too...

Proxy settings: exclude IP

Hi,
first thing I want to say, this is a very great board. Just flashed my first cooked rom on my german HTC Kaiser (t-mobile brand) and I'm very impressed by all the things the people here in the board get out of this little phone ;-)
But know I have a problem, I could find no answer for.
I am using a ssh tunnel on my device to tunnel some of my internet connections which are established through my mobile provider.
For this I'm using Mobile putty's tunnelling support to create a local socks proxy through which I tunnel my connections. The problem is, some applications like mobile outlook doesn't seem to have proxy support, so the only chance i see to tunnel them is, to tell windows mobile in the connection settings to use the proxy for all of my connections. The problem about that is, I think, then my putty would'nt be able conect to the ssh server, because it would be also forced to connect through the proxy, although it is the proxy itself (i hope this is unterstandable, because English is not my native language ;-) .
So I'm searching for a way to do an exclusion like it is possible under a non mobile windows to say for example, "don't use the proxy for this addresses", or something like freecap with tunnels applications without proxy support through a socks proxy. But I didn't find this setting nor a tool do accomplish this.
So Is there a way to do this unter windows mobile 6.1?
Another nice thing would be a tool, to dynamically switch between a direct connection and a proxy, so if there's a way for this too, I would be very happy to learn about that either.
Thanks for your help,
bcom

problem with vpn, strange behaviour, xperia

Hi there!
I'm using a xperia X1 with the latest firmware version installed which SE released.
I also use spb mobileshell 3.0 ; active sync via exchange(over SSL, not VPN); palringo; Xperiatweak; TaskFacade; G-Alarm; Skype;WM6 Remote Desktop;.net vnc viewer;
My provider is o2 and I live in germany.
I'd like to use a pptp vpn connection to get connection to several services in my network. I already used it with my xda-mini-s and my orbit2, never had serious problems. Sometimes it took a few soft-resets until i got it working... but now...
I set up my connection as I always did,
@preferences->connections->add vpn-server ;
after adding the server i specified a couple of exeptions for my network-> reboot. -done-
But this time it won't connect automatically, it doesn't react when i type in a ip/name which is defined in the exeptions. (usually it is attempting to connect to my vpn server...)
I can navigate to the preferences->connections-> edit vpn-server and connect manually. It establishes a connection successfully and i can use e.g. rdp.
PLEASE HELP!
I can't figure out why its not connecting automatically.
I entered the exeptions like I always did.
(e.g. 192.168.14.200 or domaincontroller.domain.local -> a wildcard is added automatically to the entrys -> listed like this: 192.168.14.200/*)
I would be very happy if anybody could help!
Best regards, and have a nice day.
Win****

found out something new
Hi there!
Today I found out something new. IT DOES AUTOMATICALLY CONNECT, FOR SOME PROGRAMS...
It's just a question which Software I use.
For example, I always used rdp over vpn.
So I tested if its opening the tunnel if i try to connect to one of my desktops via remotedesktop, and its not.
(on the "old" phone, rdp was included from stock, on xperia i had to install it)
I tested connecting over a java irc app, which is also not working.
If I use e.g. Opera to connect to a website (e.g. owa) over a local ip, its successfully establishing the connection and i could log in.
DAMN!
I need it to work with, rdp, vnc and irc!
Shouldn't the phone recognize that I try to connect to a url/ip wich is located in my LAN whatever wich software is used?
PLEASE HELP
Have a nice sunday.
Win****

Win**** -- Did you ever find a solution/explanation for this?
I used to use a vpn for activesync, and activesync always automatically invoked the vpn connection...so I took that for granted...but today I've been using the WM6 Remote Desktop client, and like you, I can't believe that the recognition of url "exceptions" is useless for this app.
BTW, I would have been happy if I could just create a convenient shortcut to start the connection manually, but I've been all up and down the Web, and apparently there's no way to do that, either. mad, indeed.

i have a similar issue, my phone connets and after 20 secs it drops the VPN