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This morning I was confronted with something weird. My phone all of a sudden could not connect to a remote VPS server via POP3. It would just say No Connection.
The same phone however could connect to everything else, including other services on the same remote server. And, it could connect to other servers using POP3. If I switched to WiFi, it then connected just fine.
Drove me nuts trying to figure out what the issue.
Obvious things were checked, firewall, pop3 server etc... to no avail...
So finally, I figured that Verizon was having some weird 4G problem related to port 110.. I had the POP3 server, listen on a secondary port... Still nada...
While looking at the POP3 Server configs, I saw that they now had support for ipv6, but that by default it didn't listen to them. So I changed the configuration and bang.... the phone connected...
It was apparently trying to connect to ipv6 since the time I found it was failing.
Wonder if anyone has run into this.... Looking at the logs, my phone is the ONLY device connecting via ipv6, everything else is using ipv4.
Well this turned out to be pretty simple.
IF you publish an AAAA record for a host, and you are using Verizon 4G, it will use the AAAA entry for the host in liu of the AA record.
In my case, this had surprising results that once I figured it out made sense, but at the time caused a lot of confusion as to what was the trigger for the action that was taking place.
krelvinaz said:
Well this turned out to be pretty simple.
IF you publish an AAAA record for a host, and you are using Verizon 4G, it will use the AAAA entry for the host in liu of the AA record.
In my case, this had surprising results that once I figured it out made sense, but at the time caused a lot of confusion as to what was the trigger for the action that was taking place.
Click to expand...
Click to collapse
Yes.. you learned the hard way that LTE was rolled out with native IPv6 (and preferred stack too). Pretty smart to setup a new network using IPv6 and save us the headaches of upgrading later after the fact...
I have a grandfathered Unlimited Verizon Data Plan that my company is paying me to have. I do not like Verizon, and am out of contract, so I recently purchased a Nexus 5 and plan on paying monthly with Ting. I have to maintain a "company phone" but using Google Voice, and importing all my accounts, it is really trivial that I would be using the Nexus 5 on a different carrier, since they only subsidize their employees, the device does not actually belong to them.
Instead of leaving my GS3 in a shoe box somewhere or selling it, I wanted to try using it as a dedicated hotspot for my apartment since I live in an area that has capped data from ISP's and no real solution (read FIOS) yet.
I purchased a Netgear Wireless Bridge Adapter WNCE2001 and set it up to connect to the phone's wifi hotspot and plugged that into the WAN "internet" port of my router running Tomato 1.28 firmware.
All seemed ok as far as ability to surf the web, use netflix from my TV, etc however there was a huge problem with some of the things I host from my internal network, such as media servers Subsonic, and Plex.
I am not able to access anything hosted on my internal network from any external network, even though I have not touched or altered my configurations - just replaced the WAN / "internet" port of my router with the tethered data connection.
After days of research and reading I have attempted a few fixes, although none have truly worked so far:
1) I tried connecting the phone to an open VPN server and then routing that traffic through the built in wifi tethering . This indeed worked - I followed some threads linked below, and was able to verify that now everything on my network was using the Open VPN connection - however I could not figure out a way to forward the ports appropriately and access Subsonic or Plex from the outside world.
http://forum.xda-developers.com/showthread.php?t=1993689
http://forum.xda-developers.com/showthread.php?t=2317841
2) I attempted using SSH tunnel from a remote Linux Server and although I could verify tha the tunnel was getting data piped through, I could not actually access Subsonic or PLex from the outside world. I tried to use tsocks to force all traffic for each service to use an established SSH tunnel but did not have much success.
It is important to note that these methods were tested on a shared server of a friend of mines, as far as I know they do not have root access and can not alter the open VPN or Open SSH configs or manually open ports on the server side. I wanted to just test it out to verify that it could work because I do not have a dedi or vps at the moment, I would consider getting something small from digital ocean or Amazon EC2 if this could actually work.
3) Lastly, I tried to use this port forwarding app, which as far as I can tell did absolutely nothing
Any help or direction is much appreciated, at this point I am more frustrated because after hours of reading and trying things out I feel as though I am now even more confused as to why this isn't / can't / could be working?!?!
Another thread I found here that seems like maybe it could be similar is the ability of getting NAT free with XBL using tethered data. I dont play video games, but I am wondering if something similar could be done using a crossover cable to allow for opening up ports through the wireless ISP as well? The older computer I use to host my media stuff from is running Ubuntu, and I have a Macbook Laptop, I only run Win7/8 in VM's on occasion - ideally though I want to find a solution that only uses the Linux Laptop, the phone, and the router - I can't leave my laptop home.
TLDR;
Halp! :silly:
[old desktop]- - - - ->{ROUTER]- - - - - >[WIFI ADAPTER]- - - ->[TETHERED GS3]- - - >[VZW]- - -> INTERNETS :good:
How to I send media servers from one side to the other and avoid all the NATing and dynamic IP's ? :victory:
I use versavpn with verizon and connect with openvpn. They give 3 ports to forword and dedicated ip. You chose the ports u want to forward on there web site. I have plex and remote desktop and a ftp server running on my unlimited data Verizon plan 300 gigs used a month for 3 years now. This has worked OK for me. I also ditched the tethered phone and went for a 4glte router instead much less hassle.
Sent from my LG-VS980 using XDA-Developers mobile app
Hey everyone, I wanted to put together a thread focusing on wifi issues of different variety and what we can do to potentially fix or workaround the main issues
I personally have been working on a solution for the discrepancy that disallows me to connect to my enterprise wifi at work, lollipop and previous versions connect just fine. So far ive found this issue. May not be easiest nor even possible for some of the issues some of us are having, but i think its worth working towards solutions.
https://code.google.com/p/android/i... Owner Summary Stars&groupby=&sort=&id=188867
What wifi issues? You might need nrw router.
I was able to connect via guest, then they had lock it due to bandwidth consumption. I have password since im a supervisor and my other phone (5.1.1) connects just fine. The nexus says saved, but when i click connect nothing, doesnt say obtaining ip or authenticating. Credentials are correct and connected before to same network without lock
meltdeck said:
I was able to connect via guest, then they had lock it due to bandwidth consumption. I have password since im a supervisor and my other phone (5.1.1) connects just fine. The nexus says saved, but when i click connect nothing, doesnt say obtaining ip or authenticating. Credentials are correct and connected before to same network without lock
Click to expand...
Click to collapse
Does your nexus connect fine to other wireless networks? How can you blame it on the device instead of going and fixing your work network settings instead? There are no wifi issues. Call an IT guy and he will fix your router.
meltdeck said:
Hey everyone, I wanted to put together a thread focusing on wifi issues of different variety and what we can do to potentially fix or workaround the main issues
I personally have been working on a solution for the discrepancy that disallows me to connect to my enterprise wifi at work, lollipop and previous versions connect just fine. So far ive found this issue. May not be easiest nor even possible for some of the issues some of us are having, but i think its worth working towards solutions.
https://code.google.com/p/android/i... Owner Summary Stars&groupby=&sort=&id=188867
Click to expand...
Click to collapse
Interesting, I just read through a lot (more than I can believe) of that issue log. It sounds like its technically not a Google/Android 6.0 problem even though the problem arose with the upgrade to 6.0. Have you considered doing what Nick suggested and reaching out to your enterprise IT administrators at work to see if they can or plan to do the necessary updates?
anglerstock said:
Does your nexus connect fine to other wireless networks? How can you blame it on the device instead of going and fixing your work network settings instead? There are no wifi issues. Call an IT guy and he will fix your router.
Click to expand...
Click to collapse
Yeah it connects to others but all devices lollipop and older including iphone and blackberry connect fine. And its known that android m has issues connecting to some wifi that works fine with all other devices. If you do a quick search youll see basically all 6.0 devices (nexus 6, etc) have same issues once updated to 6.0 (hit or miss depends on network they try to connect to, but same story just fine before update). The IT dept are not going to change settings on their network that works fine with 99.9% devices that people have there, since im only one so far with a 6.0 device (IT request MAC address when you get pass) it obviously is some sort of security policy within the os or something of that nature
mlin said:
Interesting, I just read through a lot (more than I can believe) of that issue log. It sounds like its technically not a Google/Android 6.0 problem even though the problem arose with the upgrade to 6.0. Have you considered doing what Nick suggested and reaching out to your enterprise IT administrators at work to see if they can or plan to do the necessary updates?
Click to expand...
Click to collapse
Yeah, they are hesitant to change what works for almost everyone that connects to it. Also i think itd be a good thing to work on since most IT admin wont change for the very few with newer devices
On a side note i do feel like its more or less a cop out of them to claim its not 6.0 fault because when push comes to shove it works fine but once 6.0 it doesn't and nothing changed on the network
When I had my Nexus 5X, I had issues connecting to WiFi at home until I used the Network Settings Reset option under Settings > Backup and Reset. I think this issue came from the restore of settings during initial setup. Possibly worth a try.
Still, the issue I'm running into now is that my 6P only connects to one of the two routers at home. I have both broadcasting the same SSID though they're different brands and one's an older G router. On my Moto X running 5.1, the phone would connect to the strongest signal. Seems the 6P will only connect to one and never connect to the other. I've had the phone "forget" that one and connected to the other and then it refused to connect to the original. Very odd.
My point in saying this is that I wonder if there's a similar issue occurring in the OP's office. Though the same SSID is being broadcast, its as if the phone remembers the MAC address of the specific router it originally connected to and refuses to connect to any others. Just a thought.
Sent from my Nexus 6P using Tapatalk
Have you tried turning on developer options, scroll down and turn on legacy dhcp client under networking.
Yeah, ive tried that also
the fix in this thread might work, if you're rooted.
http://forum.xda-developers.com/google-nexus-5/help/android-m-wpa-enterprise-ssl-problem-t3219559
tcchuin said:
the fix in this thread might work, if you're rooted.
http://forum.xda-developers.com/google-nexus-5/help/android-m-wpa-enterprise-ssl-problem-t3219559
Click to expand...
Click to collapse
Just tried and sadly it didnt work
Tell the IT dept to upgrade their radius auth
I'm also having WiFi connection issues with eduroam (an often used protocol in UK universities) amongst other including my home dual band ac network. It locks out and can only be resolved by a reboot, which then takes 30-60 seconds to power off. Not normal or 'just an admin' issue. It seems to be software related as it is not constant nor predictable (ie it's not in certain areas and a reboot always reconnects). I'm unconvinced by the 'speak to your network admin' argument as it is neither useful or realistic and incompatible on my current patterns of usage or the issues being reported more widely.
My 6p works fine on my wi-fi router at home, but when I go over to my son's house, I have to go into Advanced Wi-Fi options and change the frequency band from automatic to 2.4 GHz only. Then I have to cycle my wi-fi off and back on. Then it will work on his router. Otherwise, it with keep trying to connect and fail every time.
Rob
Yeah, these are the issues (including the issue im having) that im talking about. Theres clearly issues with wifi on 6.0. Its not an issue with the hardware, nor is the solution "buy a new router" or "must be the settings on your companys network" granted most people can connect everywhere they've tried but if they tried where we cant connect or have issues they'd have same problem. Im thinking its a problem due to security policies or something along those lines but we should be able to alter, remove, or opt out of them at our own risk. Just thinking out loud.
Which build are you on? Mine ends in k. See: http://forum.xda-developers.com/showthread.php?t=3248499
Hi,
I am just a Android user, but I believe my observations and questions are interesting and relevant to people in this forum.
I use a Samsung Galaxy A3 (2017) and wanted to use one of the many VLC remote control apps towards my Ubuntu computer that has a Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (Lite-on). Unfortunately none of them worked. All had network issues. I tried different ports and also used several browsers to access the http server of vlc directly, but even the browser had issues: it basically kept synchronised for 4 or 5 seconds, then lost synch and recovered only after roughly 15 seconds just to loose synch again after 4 or 5 seconds.
I checked the TCP connection. It did not break down. However, every 4th or 5th GET request got delayed by around 14 seconds.
I digged into it and found out that the A3 sends a TDLS Setup Request to the QCA9565, gets a TDSL Setup Response and then sends a TDLS Setup Confirm which is replied by the QCA9565 with a TDLS Teardown. After that, the connection between the two hosts is dead for about 14 seconds.
Other hosts in the network did not have such issues, but as far as I can see, they are also not using TDSL. So I suspect that some issues with TDLS between my Samsung A3 and my Ubuntu machine regularly interrupt the local WiFi connection between the two.
So now my question: Is it somehow possible to disable TDLS on my Android phone? Or are there any vlc remote apps around that somehow suppress TDLS for such local WiFi communcation?
Thanks
Michael
Hi all
I've setup VPn tunnels to my office on my S9+. I've setup a PPTP from the built in client and IPsec and SSL from the Fortinet Client and none of them are working.
I'm sure that authentications are correct as I use same settings on my laptop running windows 10 and on a iPhone 7 plus.
Anyone with the same problem?
This might not help you exactly but there seems to be an issue with the stock ROM and VPNs. Adguard, which blocks ads via VPN, was also having the same issue and the devs have reported it to Samsung from what I understand. The fix will probably come during a later update since VPN issues are a bigndeal, especially for people who need to use their devices in a corporate environment.
My VPNs include one PPTP and one IPSec/PSK, and they both connect without issues on four different Verizon S9+ phones.
tasmaniandevil69 said:
Hi all
I've setup VPn tunnels to my office on my S9+. I've setup a PPTP from the built in client and IPsec and SSL from the Fortinet Client and none of them are working.
I'm sure that authentications are correct as I use same settings on my laptop running windows 10 and on a iPhone 7 plus.
Anyone with the same problem?
Click to expand...
Click to collapse
Same here, PPTP not working on my s9+. But IPSec/PSK working (slow speed)
Hi
same here . It's little different for me
PPTP work with S9 but in hotspot, i can't connect to PPTP VPN on my laptop with wifi of S9 !
There is a really problem with PPTP ...
I opened ticket here : https://forum.xda-developers.com/galaxy-s9/help/hotspot-vpn-pptp-issue-t3765773 !
New firmware for s9+ and s9
I m waiting new file for my s9.
Bug of vpn pptp is solved ?
not solved with last firmware ...
jpbl1976 said:
This might not help you exactly but there seems to be an issue with the stock ROM and VPNs. Adguard, which blocks ads via VPN, was also having the same issue and the devs have reported it to Samsung from what I understand. The fix will probably come during a later update since VPN issues are a bigndeal, especially for people who need to use their devices in a corporate environment.
Click to expand...
Click to collapse
Hola
I just wanted to give you a heads up that Adguard dev's have figured out a temporary workaround to make the their VPN ad blocking features stick. You'll need to check their forums for the actual setting (or use their nightly release which has the setting enabled by default). I have this setting enabled and now I am able to browse ad free for the most part without issues.
I've just update the phone and it's now working yet. Besides that the problem is even worst because I can't even connect VPNs on my laptop if using the phone as hotspot.
I've reported to Samsung and I'm waiting for a call and a remote assistence but if I can get a fix in a few days the phone will be returned because this is a big issue for my work.
tasmaniandevil69 said:
I've just update the phone and it's now working yet. Besides that the problem is even worst because I can't even connect VPNs on my laptop if using the phone as hotspot.
I've reported to Samsung and I'm waiting for a call and a remote assistence but if I can get a fix in a few days the phone will be returned because this is a big issue for my work.
Click to expand...
Click to collapse
I used this functionality fairly frequently with my (Verizon) S8+.
I've just completed about an hour of testing with my (Verizon) S9+.
I tried the USB tether, the Bluetooth tether, and the Hotspot networking on the phone. In each case I established a network connection to the public Internet without issue.
The VPN connections from my Windows 10 system, however - using that S9+ connection - all fail now with one exception.
The PPTP, L2TP/PSK and IKEv2 connections (that all work[ed] with my S8+) will not connect using my S9+.
The one exception is the Microsoft-specific SSTP variant, which tunnels over port-443. That one will connect with the S9+ in all three networking scenarios - USB, bluetooth and Hotspot WiFi.
This seems to indicate that the new phone does not pass TCP port 1723 and/or GRE 47 (PPTP) and UDP ports 500 and/or 4500 (L2TP and IKEv2) through it's network tethering and the WiFi connections.
Bummer.
At least I can still use SSTP to get to my server resources - which is 90% of my VPN needs anyway - but the other connections are dead now.
Connections FROM the phone, using it's built-in PPTP and L2TP profiles to host networks, continue to work properly on the S9+ -- as they did on the S8+.
afh3 said:
I used this functionality fairly frequently with my (Verizon) S8+.
I've just completed about an hour of testing with my (Verizon) S9+.
I tried the USB tether, the Bluetooth tether, and the Hotspot networking on the phone. In each case I established a network connection to the public Internet without issue.
The VPN connections from my Windows 10 system, however - using that S9+ connection - all fail now with one exception.
The PPTP, L2TP/PSK and IKEv2 connections (that all work[ed] with my S8+) will not connect using my S9+.
The one exception is the Microsoft-specific SSTP variant, which tunnels over port-443. That one will connect with the S9+ in all three networking scenarios - USB, bluetooth and Hotspot WiFi.
This seems to indicate that the new phone does not pass TCP port 1723 and/or GRE 47 (PPTP) and UDP ports 500 and/or 4500 (L2TP and IKEv2) through it's network tethering and the WiFi connections.
Bummer.
At least I can still use SSTP to get to my server resources - which is 90% of my VPN needs anyway - but the other connections are dead now.
Connections FROM the phone, using it's built-in PPTP and L2TP profiles to host networks, continue to work properly on the S9+ -- as they did on the S8+.
Click to expand...
Click to collapse
That is the Snapdragon version? Does it have a special ROM from Verizon or is the stock Samsung?
Maybe that is the difference
tasmaniandevil69 said:
That is the Snapdragon version? Does it have a special ROM from Verizon or is the stock Samsung?
Maybe that is the difference
Click to expand...
Click to collapse
Stock Verizon (SD845 8.0) S9+ compared with a stock Verizon (SD835 7.0) S8+. I suppose the difference might be explained by going from Android 7 to Android 8, but I have no way of testing that hypothesis at this time.
(The last phone I modified was a 2013 Motorola RAZR. I've subsequently switched to using my phones as phones, rather than as a hobby. )
If someone has a different experience with employing a networked platform's VPN while using a similar phone in a tethered or hotspot configuration, it would interesting to know.
My own successes with the phone's built-in VPN (PPTP and L2TP) - as separate from the scenario described above -
apparently differ from those of others in this thread for reasons I cannot explain.
I'm in the same boat - a new S9 and can't connect to my work VPN when using the phone as a hotspot. It works fine on S8 and Iphones. Does anyone know how to fix this? This is a critical issue for me as I work remotely quite a bit.
julianskipworth said:
I'm in the same boat - a new S9 and can't connect to my work VPN when using the phone as a hotspot. It works fine on S8 and Iphones. Does anyone know how to fix this? This is a critical issue for me as I work remotely quite a bit.
Click to expand...
Click to collapse
I think there is no fix yet. I had someone from Samsung support connected to my S9 last Tuesday and they could not find anything so they escalated the problem inside Samsung but until now no further news.
S9+ work with IPSEC!
My Samsung S9+ work with IPSEC - tested on Andoid version 8.0.0..
grube007 said:
My Samsung S9+ work with IPSEC - tested on Andoid version 8.0.0..
Click to expand...
Click to collapse
What CPU does it have? Is it unlocked or from what network/provider is it?
tasmaniandevil69 said:
What CPU does it have? Is it unlocked or from what network/provider is it?
Click to expand...
Click to collapse
CPU - Exynos 9810 - 2,7 GHz, its on Croatian network - T-Com ( T-mobile ) - locked.
New update in germany : G960FXXS1ARD1
Maybe a good patch ...
My S9 unlocked (SD) can connect to my L2TP/Ipsec VPN but disconnects within a minute or so (even if the connection is under constant use.) I have another Anrdoid 7 device (and a Windows 10 laptop) that has no problem with the same VPN/router/WiFi combination and can stay connected for hours. I don't know how to escalate this with Samsung in a way where they just don't blame my other hardware.
https://eu.community.samsung.com/t5/Galaxy-S9-S9/VPN-PPTP-Broken-with-HotSpot-Galaxy-S9/td-p/522153