PPTP VPN doesn't connect - Galaxy S III Q&A, Help & Troubleshooting

Hi.
I want to connect to a vpn server by PPTP.I can connect to the server over 3G,but It doesn't connect over WiFi.
Sometimes when I turn on Fly Mode,it connects,but this happens sometimes.Also I'm sure that vpn server is up and running.
But there's no problem when I want to connect to that server by L2TP/IPSEC with PSK.
My Phone is Galaxy S3 running Android 4.0.4.
Please guide me how to fix this problem.
Thank you

zeusys said:
Hi.
I want to connect to a vpn server by PPTP.I can connect to the server over 3G,but It doesn't connect over WiFi.
Sometimes when I turn on Fly Mode,it connects,but this happens sometimes.Also I'm sure that vpn server is up and running.
But there's no problem when I want to connect to that server by L2TP/IPSEC with PSK.
My Phone is Galaxy S3 running Android 4.0.4.
Please guide me how to fix this problem.
Thank you
Click to expand...
Click to collapse
As ridiculous as it sounds, this is a known bug in ICS.
It may (or may not) be fixed in JB (you'll have to ask someone else).
However, as ICS allows you to use third-party VPN protocols, there are some great OpenVPN clients in the market, if your VPN provider supports it. This is the solution I had to accept

Both CM10 as well as the leaked JB ROM from Samsung fix all VPN issues for me.

I just did a PPTP connection with my router running DD-WRT and didn't have any problems. The only problem that I did have is that once I am connected I can't disconnect without doing a reboot which could be a problem with CleanROM 2.0 that I am running. At any rate it, it routed all of my data through the VPN.

I can connect to vpnreactor servers with PPTP just fine, but trying my DD-WRT box is always unsuccessful. Hopefully with stock JB it will work for me.

The OpenVPN client from PLAY works great when connecting to our Cisco 527 router at the office. No worries at all to setup and use.
Using the Citrix receiver works well through it as well. AWESOME

Related

ATT 8525 Internet Sharing And Cisco VPN

Hi
I update my cingular / att 8525 with the new rom that replace the wireless modem with the internet sharing. The internet sharing worked fine.
Some time when my home high speed internet goes slowly, I use my 8525 as a wireless modem to connect to my work computer via Cisco VPN version 3.66.
After upgrade to the new rom that uses internet sharing, I cannot connect to my work computer as before the upgrade. As soon I run the VPN Client, and the VPN do all registration, I not longer have internet access. When I run Remote Desktop to connect to my work computer, I got an error that I can't find the computer. If I open the internet explorer (IE) to go any site, the IE can not find any size. If I disconnect the VPN connection and repair the internet sharing I can browse the internet.
I contact the HTC support with not result. I want to know if someone that has not upgrade the rom yet, can send me the wmodem files from the windoew directory to see if I can get the wireless modem working or if some one has any correction options.
Regards,
Gilberto Fres
The latest Cisco VPN client (v5.0) fixes this.
I installed the Cisco VPN version 5 in work computer to test. I disconnect from the network and create a bluetooth connection between my 8525 and the PC. I got internet access thru the phone. I launch the VPN and the VPN connect to the network. I check for internet access and was still there. The only problem is that when I ping any computer in my work network, I dont get any reply. I still can't connect to any computer in my work network, but this time with this new version of VPN, I'm not losing the internet.
If posible to get the WModem software that is the wireless modem instead of internet sharing?
Regards
Gilberto Fres
Sounds like a bug that was in the Beta v5.0 client. Are you connecting to a Cisco VPN concentrator? I'm using a 3020 w/o issues on the production client (has official Vista support).
My laptop runs Windows XP however..
gilfres said:
I installed the Cisco VPN version 5 in work computer to test. I disconnect from the network and create a bluetooth connection between my 8525 and the PC. I got internet access thru the phone. I launch the VPN and the VPN connect to the network. I check for internet access and was still there. The only problem is that when I ping any computer in my work network, I dont get any reply. I still can't connect to any computer in my work network, but this time with this new version of VPN, I'm not losing the internet.
If posible to get the WModem software that is the wireless modem instead of internet sharing?
Regards
Gilberto Fres
Click to expand...
Click to collapse
Possibly because DNS isn't working thru the VPN client? Can you ping or RDP by IP address?
Or, do the hard coded proxy settings affect VPN? Have you tried disabling the proxy?
Hi
The version of the Cisco VPN is 5.0.00.0340. I'm connecting to cisco 3000 server. If I trying to ping any computer on my work network after the VPN connect, gave me time out all the time, but I could connect to the internet using the Internet Explorer.
Playing with this yerterday, in the control > network connection, I pick the property of the connection made by the 8525. I went to the properties. In the Advanced tab I click the option "Internet Connection Sharing" to see if the VPN work and I received a message that the connection to the internet can be lost. I lost the connection and went back to the property dialog box. When I click the Advanced tab, the all "Internet Connection Sharing" section not longer showing up in the "Advanced" tab.
Right now the phone connect to the PC, but I don't have any internet in the PC. How I can disabled this "Intenet Connection Sharing" when this doesn't show up in the Advanced tab of the network connection properties?
Regards
Gilberto Fres
I've got the AKU3.5 ROM loaded on my 8525 but I've not tested the Cisco VPN client with it. My responses have been based on my TyTN which runs my WM6 ROM. I'll pair up my laptop with the 8525 later today and test.
Sleuth255
Did you test your 8525 with the Cisco VPN Client?
Gilberto
Forgot about it.... I'll be home in 2hrs & will test then.
also: are you tethering via USB or Bluetooth?
Testing complete. Tethered my laptop to my 8525 using USB. Connected to my 3020 concentrator with Cisco VPN client v5.0.00.340, logged in and successfully browsed to our internal-only (RFC1918 CIDR block) intranet portal site.
I am using IPSec over UDP (NAT/PAT).
Looks like the 8525 Internet Sharing/v5.0.00.340 client combination works for me.
Sleuth255
Our company concentrator is the 3000 not the 3020 that you use for the test.
Look like I have to wait to HTC release the update to WM6 and lockely if the will include the DUN package in the update.
I got the VPN connect but can't sent and received any package thru the VPN. I still have internet browsing capability, but I can't ping any computer in my work network.
Thank Sleuth255 for your information.
Gilberto
are you also IPSec over UDP?
hey all, does anyone know if there are any free/opensource vpn client WM5/WM6 software? I've tried Antha and Bluefire VPN. I had great success with Bluefire VPN but a license costs $79. Antha was just a bit too unstable.
Any recommendations?
I'm not aware of any that can do 3DES other than the two you mentioned. Let me know if you find one!
Sleuth255
Yes is IPSec over UDP.
Gilberto
can your shar VPN software?
Sleuth255 said:
The latest Cisco VPN client (v5.0) fixes this.
Click to expand...
Click to collapse
Can you post a link to vpn software? and more information that you have.

[Q] OSX lion l2tp VPN server connection

Posted here, since I believe this is a general and not device specific issue.
So, I have set up a VPN server on OSX Lion Server edition.
It is using l2tp with preshared key and username/password for login.
i(beep) works fine and connects. Laptop works fine and can connect.
But...
1. When Iam on local network (same IP segment) I can connect using Android native l2tp VPN connection setup with PSK and user/pass.
2. When I try to connect from external (3G or other WiFi net) I am unable to connect.
3. When I enabe native tether on Android device, and connect i(beep) to the Android AP, I still am able to connect from i(beep).
These three steps tells me it is not a carrier issue, and possibly an Android issue.
Did anyone experience this (and even better.....did you find a solution)?
Kinda like the l2tp connection for security, and also Lion natively does not supply pptp connection.
/Niel
I am trying to do the same thing, I havent got the VPN to function yet though but I think its a router issue among other things. I bought a domain name and I am using that with dyndns to help simplify the ip change issues... I am getting a new router to test here next week so hopefully I'll have a better idea.
However now I am worried I'll run into the same issue as you!! lol... Its been a while since you posted, have you found a solution yet?
No. Didn't find a solution, but you might be correct in assuming its a router issue. Have a Netgear myself, and those have had quite a few issues.
Sent from my GT-I9100 using xda premium
I ended up getting a new Airport and it has pretty cool setup integration with the Server / Airport Utility, however I still cannot connect with the VPN connection.
My initial reason to set this up was to use PLEX... AND this actually works very well if I setup my connection through the PLEX connection settings.. but I still can't get it to work with the Android VPN setup.... (tested 3G and WiFi)
..also I cannot get the VPN to work with a Windows PC... tested a Mac (hackintosh) and it worked instantly...
so I think its a Mac thing maybe... Since PLEX is working... I am happy but would still like to get the VPN connection working properly. I suspect I'll need to call Apple about it though
I am also have a similar issue.
OSX Server running 10.6.8
L2TP VPN and PPTP services running
My iPhone and laptop can connect just fine. My HTC One X and HP Touchpad (CM9) can not. Both say the address can not be resolved. The server is sitting in the DMZ and if I enable the web server both devices can resolve to the default welcome page just fine.
1. It isn't a DNS issues since they can connect via the web
2. It isn't a port issue since other clients can connect
Is there some dumb setting i am missing in the VPN setup?
Thanks
Will
OSX Lion Server L2TP VPN and ICS not working
Hey guys.. I got PPTP to work to OSX Lion Server by making sure PPTP, L2TP, and IPSec forwarding were enabled through my router.
Also, make sure to check the VPN logs in /var/log/ppp/vpnd.log to see why it's not connecting..

Unable to connect to VPN on 3G

Hi all,
Im having a problem connecting to a VPN on my Galaxy S3 (stock ROM, not rooted, running Android 4.0.4). I can connect to the VPN fine when Im on a wifi network, but when I try to connect while on 3G network it just says connecting for about ten seconds then comes up Unsuccessful.
Initially I thought it might have been something to do with the network blocking VPN connections, but it worked fine on my old phone (Desire Z running stock 2.3.3) and still runs fine if I try it on the old phone with a different sim from the same network.
The VPN in question is connecting using PPTP.
Is there some setting on the S3 that determines whether or not a VPN can connect over 3G? Or is there something else that I might be missing?
Cheers.
Are you sure you're using PPTP and not L2TP or OpenVPN on the old phone?
The network _could_ filter VPN based on the SIM-card but it's somewhat unlikely.
Try comparing the Network APN settings of both devices, especially whether one of both has a Proxy configured.
Now that you mention it I think the old phone might be set to use L2TP, but they changed that setting in ICS and I was unable to use L2TP (neither the PSK or RSA options would allow me to connect) so I had to use PPTP. The fact that it is connecting on the S3 when Im connected to wifi I didnt think it would make a difference; do you reckon that could be the cause of the problem?

Android VPN + Tethering

I use Android's native PPTP VPN connection to manage computers at my office or at my home if I need to do something when I'm not physically present.. If my phone is connected to the VPN however, and I tether my internet connection to my tablet, I can't seem to get access unless I make a second VPN connection from my tablet.
Does anybody know how to share VPN access to tethered devices? I'm sure its possible, just not sure how to make it happen...
possible solution see cross-link
See http://forum.xda-developers.com/showpost.php?p=33749904&postcount=10
And why are you trying to do that?
I haven't tested vpn "sharing" , but it is simple to vpn with the tethered device to the vpn server. Wifi tether passes the vpn traffic fine.
I will poke around with it sometime.
Sent from my ADR6425LVW using Tapatalk 2

[Q] Cannot use work VPN when tethered to S4

I noticed recently that I cannot connect to any VPNs from any device connected to my S4 through wireless tether. This has probably been a problem, I just have not needed to use it. I am not using any third party software for tethering, but I am using HyperDrive ROM.
I CAN connect to my home PPTP VPN from my phone, but connecting to the same VPN through a computer or tablet tethered to that phone fails. I also tried connecting two different laptops to my work VPN (SonicWall SSLVPN) and in both cases it says it cant reach the host. I did verify the host was available and I can even ping it and even connected to the VPN through my home wireless.
Is there a VPN pass through option I am missing somewhere?
gregg098 said:
I noticed recently that I cannot connect to any VPNs from any device connected to my S4 through wireless tether. This has probably been a problem, I just have not needed to use it. I am not using any third party software for tethering, but I am using HyperDrive ROM.
I CAN connect to my home PPTP VPN from my phone, but connecting to the same VPN through a computer or tablet tethered to that phone fails. I also tried connecting two different laptops to my work VPN (SonicWall SSLVPN) and in both cases it says it cant reach the host. I did verify the host was available and I can even ping it and even connected to the VPN through my home wireless.
Is there a VPN pass through option I am missing somewhere?
Click to expand...
Click to collapse
I have the same but it just started happening on 8/9. I've been using my work VPN for over a month and now its just either disconnects after a few seconds or can't connect.
gregg098 said:
I noticed recently that I cannot connect to any VPNs from any device connected to my S4 through wireless tether. This has probably been a problem, I just have not needed to use it. I am not using any third party software for tethering, but I am using HyperDrive ROM.
I CAN connect to my home PPTP VPN from my phone, but connecting to the same VPN through a computer or tablet tethered to that phone fails. I also tried connecting two different laptops to my work VPN (SonicWall SSLVPN) and in both cases it says it cant reach the host. I did verify the host was available and I can even ping it and even connected to the VPN through my home wireless.
Is there a VPN pass through option I am missing somewhere?
Click to expand...
Click to collapse
Try this: http://forum.xda-developers.com/showpost.php?p=33749904&postcount=10

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