Database Info

[SOLVED] Reverse VNC Connection

-- SOLVED --> For those who care...
Initial issue/goal: Ports open or blocked over 3G/4g? Getting a reverse VNC connection working on an android phone.
Resolution: Ultra VNC SC basically allows someone behind a firewall or router to, without any configuration required, share their desktop with someone (you) for technical support or any other means. I use it for friends and family and such, and it works great, but the real question and purpose of this thread was about open ports on a 3G/4G connection and what VNC apps allow listening. This is what worked for me: Remote VNC Pro from the market (~$6), DynDNS from the market (free), a dynamic DNS account that is supported by the DynDNS application (like no-ip, dyndns, etc), and a personalized/configured version of Ultra VNC SC (linked below). Port 5900 works, as well as a few others, but 80, 8080, and 443 won't.
VNC Application: Remote VNC Pro (for the phone)
VNC Application: Ultra VNC SC (for the client)
Dynamic DNS: DynDNS (update agent)
Mods/Admins feel free to move this thread and/or lock delete if I am breaking any rules (like advertising?) or something.

Re: [HELP] Reverse VNC Connection
I know with 4G you definitely get a publicly accessible IP without any proxy in the middle. I imagine 3G would be the same so it should be fine in that regards.
As for open ports, any app worth its chops should let you choose which port it listens on so that shouldn't be an issue.
Why don't you just buy one of the apps and give it a try? If it doesn't work you can always return it within 24 hours for a full refund.

Trial and Error
---- ORIGINAL FIRST POST ----
Not sure if this should go here or not, but I'm trying to see if I can get a Reverse VNC Application going. Looking at existing VNC applications for Android, the only one that allows listen mode is Remote VNC Pro v1.7.7 and above. Unfortunately, since it is not free, I cannot test the listening capabilities. Listening aside, I suppose my biggest issue will be open ports. Given 3G/4G addresses (NAT, I assume?) are out of our control, does anyone know what ports are open and what ports are not?
Has anyone else tried? Interested? Suggestions? Here's what I have so far:
VNC Application: Looking at Remote VNC Pro (for the phone)
VNC Application: Ultra VNC SC (for the client)
Dynamic DNS: DynDNS (update agent)
---- END FIRST POST ----
rdude said:
Why don't you just buy one of the apps and give it a try? If it doesn't work you can always return it within 24 hours for a full refund.
Click to expand...
Click to collapse
Well the idea was to see if anyone had already tried this and/or had the application to save me time troubleshooting. Since there has been no response, save yours, I went ahead and purchased it.
rdude said:
As for open ports, any app worth its chops should let you choose which port it listens on so that shouldn't be an issue.
Click to expand...
Click to collapse
Oh, it has the option to specify ports, but which ports are open over a 3G/4G connection is what I wanted to know. I tried 443 and 80, and both gave me permission errors. Surprisingly 1723 (PPTP) works, but VNC Pro on the phone just sits on the 'please wait while listening on <ip address>' screen forever. The computer running the Single Click VNC server says that the connection was successfully acquired, but the icon never changes colors (suggesting I am completely connected). The interesting thing is that when I cancel or close the connection on the computer, VNC Pro on my EVO closes the 'listening' window and gives me a java exception error.
*sigh* any ideas? I'm guessing the connection is going through but other traffic is getting blocked or something. Not sure what other ports to try, but I will fiddle around with it in the mean time.
Edit: I tried the standard ports on a local WiFi connection. I gave the phone a static IP, port forwarded everything appropriately, and then received the same results. I'm going to take a few screenshots and send and e-mail to the developer for now.
Edit: It appears to be an issue with Ultra VNC SC. Ultra VNC and Real VNC both worked by manually adding the viewer client from the installed server while using port 5900. Sort of defeats the purpose for me, but the developer said he would try it out and (hopefully) get it working.
Edit: The dev got back to me really quickly and we figured out the issues and fixed it over the weekend. He pushed out a new version of the application on Sunday. First post has been updated for those who care.

Bumping the thread for those who are interested in what worked for me, now that everything is fixed.

Nice, been interested in this. How is the refresh rate when your phone is on WiFi and also how is it on 3G?
I tried Screencast (http://code.google.com/p/androidscreencast/), but it only runs at 3-5 FPS, so it was pretty unusable.

I've only had it working for a day, and nobody has really needed my help, so my testing of the application has only been to confirm it works. The best thing I can say, for now, is that the reviews all brag about the performance and pinch-zoom, that the developer is pretty cool and was willing to return the application well beyond the 24 hour limit, should the application not meet my needs, and finally that he fixed the issue I was having in less than 48 hours from the time I reported it to him. Overall, as far as the application is concerned, I am pretty satisfied. For example, I wrote (and edited) this post while using it over 3G from my phone. I saw all the text as I was typing, so I would say the frame rate is satisfactory.
Edit: Wait, after following your link, I think you might be misunderstanding the purpose of this application. This allows you to control a PC from your Android, not the other way around. The purpose is to supply people with a pre-configured portable application that allows you to connect to the computer without any port forwarding or security changes on their machine. The application (uVNC SC) also "uninstalls" itself from their computer after the connection is closed. To reiterate, the primary benefit is to allow you (the admin) to connect to someone else (the user) without them having to do anything but double-click on your connection.

You're right. I misunderstood, didn't know what "reverse vnc" really meant.

Sorry, I knew people confused the two, so I could have been more clear. On that note, I am also interested in a... remote connection to my Android phone. Recording, in particular, would be great for demo's and setup instructions, given so many people have android devices now-days. But yeah, this is not the setup for that. =/

brennen.exe said:
Bumping the thread for those who are interested in what worked for me, now that everything is fixed.
Click to expand...
Click to collapse
Glad to hear you got it working! I'll try installing it this week and see how it goes.

Looks to me that I want to do exactly the same. Sorry to bump the thread but seems the best thing to do.
I want to support people OTA, since I don't need high framerates, just a view at some PC settings.
I have Remote VNC Pro and it allows the phone to Listen for incoming VNC connections. But it listens on a 10.20.xxx adress, instead of my WAN 3G/4G ip-adress.
I want to use GITSO (awesome little program) for the http://code.google.com/p/gitso/ support issues.
It works flawless pc-to-pc where I have my own portforward setup, saves tons of hassle with the people I want to support.

[Q] What about default Android VPN

Hi all!
This is my first thread, and I hope I've done everything correctly (noob video, forum rules, etc ...). Well, I'd like to know a little bit more about VPN features in Android.
I use official Android Samsung ROM 2.3.2, but I think my questions are valid for any kind of ROM/device.
I've tried to set PPTP VPN, but I had troubles. Anyway, I would like to know more about that feature:
- Does *ALL* traffic goes through the VPN (data connection), or does some apps can bypass it?
- I heard about default VPN implementations in Android is crap (PPTP, L2TP ...). Can you confirm it, or give me Google keywords?
- I would like to redirect *ALL* my traffic to a server, in way to dump all connexion.
- OpenVPN sounds a good solution for what I want to do, but do I need to know if we can install it without rooting my phone.
Well, I hope there is not another similar topic I am actually making a little study, so if you affirm something, please reference your sources (or a name/website/author ...)
Thank you

Nobody can give me a piece of advice ? :/

android vpn
hi
first you have to setup a android vpn service and then you can setup above features check (purevpn.com/vpn-service/android-vpn.php)

Hi!
Thank you for your reply! But I don't want to use these service, I want to create mine (I got some Debian servers ...)
Anybody else ? :/ I'm quite desipointed to see so few answers ... Or maybe I missed the good topic ..

Solution/possible solution for Tether police issues

I don't have much time to look into it at the moment, but for those of you who tether either internet or bluetooth you should look into getting NAT going on your phone. This requires root as far as I know.
You can use iptables (comes with our kernels), ipchains, netfilter, or what ever else passes for NAT/firewall these days on linux. I'll probably end up compiling a ipchains binary here in the next couple weeks if I don't find one (I haven't been able to as of yet)
That will solve the problem of detection via originating address.
To bypass deep packet inspection, look into an encrypted VPN solution. There are some free ones out there, or you can try something like what Giganews offers. Depending on how AT&T does things, this could also potentially speed up your service because many ISPs give VPNs higher QOS priority. This could also be a bad thing because they could decide you need to be on the enterprise plan. Use at your own risk. If you really want to get crazy, tunnel a VPN through an SSL proxy.
One other thing that will help that will help in general is to install any firewall program. Here are a couple I found on the market (sorry can't link yet):
com.wemobs.internetfirewall
com.mm.plugins.contactsprotect.droidwall1
com.dexters.andfirewall
com.googlecode.droidwall.free
I have not tested any, but they all appear to allow you to pick and choose which applications can access the internet. What better way to make sure no applications are phoning home without permission.
These may or may not turn on the NAT functionality for you.
YMMV, but I hope this helps someone

I think tor has some android proxy service, should help.

[Q] Reverse tethering - Please help

Hi, simple problem here. I need to make an Android app that reads a file on PC (picture or movie) and displays it on the screen. WiFi is not an option so it MUST work via USB. It must work on MAC (LINUX acceptable, NOT WINDOWS). Looking around there are 3 ways to do this:
1) reverse tethering. If I manage to have all internet traffic on USB then I can access files on my machine via web server. Looks a bit over complicated though. I looked all over the net and couldn't find out how to do on my WiFi tablet (Galaxy tab7 plus Wifi, Android 3.2, no 3G). Some solutions require enabling the "USB tethering" option on the tables, which is not there for WiFi only. I couldn't get to work the method that "netcfg usb0 dhcp" either.
(Note: WIN users seem to be happy with this UsbPortForwarding.aspx but I need something that runs on Mac or Linux)
2) Direct USB access. Do we have a method to allow an Android app to read a file on the computer? As far as I what I read, the answer is no.
3) USB to ethernet adapters. That would be great but again I still have to find an adapter that will work with Honeycomb
Any hints? pls help, looks like such a simple thing to do but it's really hard without WiFi!
cheers!

http://www.xda-developers.com/android/reverse-tethering-keeping-your-android-device-online/
There's the reverse tethering article from the portal last month. Not sure if that's exactly what you need because I've never used the app. Give it a go. Hopefully it works.

thanks, I've seen that, it's the WIN-Only solutions which I mentioned. Seems to work very well but unfortunately I need a unix based machine.
Quite shocking that there is only a Win version, looks like a problem that would be very easy to solve in unix (IF one knew what to do..
Any unix-gurus opinions on this?

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[Q] MS Remote Desktop on Note 10.1

I've installed Microsoft's Remote Desktop app, and made some changes on my desktop (actually laptop) to be able to use my Note 10 as a Windows client. On my home WiFi network, using my Note 3 as the router, it worked nicely. However, I'm not really going to use it sitting next to my laptop, but rather when I'm out on town or some other place. I realize that I won't find my laptop through its name on my network, this requires more advanced settings, so I've searched for tutorials on this. However, those I found where rather rudimentary, meaning I actually understood everything and had already implemented it. I'm sure a "true" remote setting requires a more sophisticated setup. Hence, are there any users here who have already implemented this? Do you set up a special account on the desktop/laptop? I understand if it is a daunting task to explain all this to half nitwit like myself, but I am capable of learning, so if you know a good thorough tutorial on the subject I'd happily devote some time for the subject.

If you have your laptop running on your home network and you want to access it through Remote Desktop while somewhere else, it is a significant setup needing some technical knowledge to make the system visible on the internet as you have found out. You need to create an opening through your internet router, set up some sort of dynamic DNS service and so on.
You may be better using a tailor made solution designed to do what you want without all those hassles. Not wishing to advertise anything specific, but TeamViewer is very much intended for this, running as an app on the tablet and a service on the laptop PC. The software hadles the communication between the two through a central 'broker' service.

I'll go ahead and name names. Ive tried several and my favorite so far has been either Pocket Cloud or Jump Desktop. Jump is my daily choice and can be easily set up on your PC using your Google account so you can always find it, even when off of your own network. Jump also seems a little smoother than Pocket Cloud. Both support 1 free connection I believe.
Good luck finding the right one for you.
As for direct RDP without Jump Desktop or similar, you'd need to set up your router with port forwarding and choose a port that you will use in conjunction with your external IP address to enter into your RDP app on your tablet. Problem is that some ISP hardware (like my DSL modem) has built in firewalls that prevent port forwarding from working. Not to mention that your IP address may not be static unless you pay for that option specifically with your ISP. Consequently it may change every time the power cycles on your DSL modem or router.

@Spydervoice
Ahh, very helpful comment, much appreciated. So a dynamic IP, which is what most ISPs provide will in essence spoil the experience unless I set it up specifically for each day. See, this is the kind of erudite reply that makes a person willing to endure spam and LOLcats on the Internet.
I used Splashtop before, with my ASUS Transformer, but the lag essentially made it a bust. What was nice about the Microsoft RDP was the instantaneous response. I actually ran a session of Word on my Note 10.1 and it was neither uncomfortable nor frustrating. Hence, my interest in making a session available over the Internet.
Assuming I could do this whole thing about opening up a port in the router, do I expose myself to hacker attacks?
Sent from my GT-N8010 using Tapatalk 4

Kumabjorn said:
@Spydervoice
Ahh, very helpful comment, much appreciated. So a dynamic IP, which is what most ISPs provide will in essence spoil the experience unless I set it up specifically for each day. See, this is the kind of erudite reply that makes a person willing to endure spam and LOLcats on the Internet.
I used Splashtop before, with my ASUS Transformer, but the lag essentially made it a bust. What was nice about the Microsoft RDP was the instantaneous response. I actually ran a session of Word on my Note 10.1 and it was neither uncomfortable nor frustrating. Hence, my interest in making a session available over the Internet.
Assuming I could do this whole thing about opening up a port in the router, do I expose myself to hacker attacks?
Sent from my GT-N8010 using Tapatalk 4
Click to expand...
Click to collapse
I use spalshtop hd every day from different places with no lag at all. Might give it a shot again, if you got decent home rig.

Have you tried TeamViewer? I find it works mostly well, and you don't need to worry about home connections changing addresses and such.
-----
Tips for a pleasant XDA:
Search before asking. Someone has likely already asked.
Spell your words completely, and use punctuation. It confuses people when you use "u" and "ur" and "dat", or when you wrongly use "there/their/they're/your/you're".
Be nice. Don't be rude, just move on to another post without leaving a comment. We are not 7 years old.
And PLEASE, do not ask for the "best" anything. We all have our preferences.

(I feel like a twit for somehow missing an earlier post suggesting TeamViewer)
-----
Tips for a pleasant XDA:
Search before asking. Someone has likely already asked.
Spell your words completely, and use punctuation. It confuses people when you use "u" and "ur" and "dat", or when you wrongly use "there/their/they're/your/you're".
Be nice. Don't be rude, just move on to another post without leaving a comment. We are not 7 years old.
And PLEASE, do not ask for the "best" anything. We all have our preferences.

Happens all the time, no worries.
Sent from my GT-N5110 using Tapatalk 4

DDNS
If you have trouble with Dynamic IP you can always use a dynamic DNS service. Most modern routers include the capability, or you can get client software for your PC or NAS. This will allow you to have your own DNS name which remaps your IP address whenever it changes.
---------- Post added at 09:42 PM ---------- Previous post was at 09:31 PM ----------
The other thing to watch out for if you are opening your router the big bad world is make sure you have only the port you need open to the outside world, and don't use the standard port for RDP 3389. Just a word of warning.

The part about opening up a port is what causes apprehension. Even if I use a different port, aren't there something called "port sniffers" available to hackers interested in breaking in?
Sent from my SC-01F using Tapatalk

another great solution if you do not want to mess with port forwarding and dynamic dns (paid though, and not too chip) is logmein. it is the simplest i ever used.
next one mentioned somewhere in this thread that worked for me too is Jump Desktop with google account set up. i think this one is free for one connection or so...
i have never used team viewer do do not have an opinion about that
original win RDP will work only with ports forwarded and dynDns service running on your router.
port forwarding tutorial by ms:
http://windows.microsoft.com/en-us/...op-connections-from-outside-your-home-network
dyndns confug will vary in different routers.
i was using it for some time with both pocket cloud and jump desktop and both worked great. never had any issues even when working through 3G.
hope it helps...
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