Network eof error openvpn android

Hi!

I have problems connecting with openvpn connect (ios) to my openvpn server. Before any crypto-stuff can get handled out, it breaks up with the following message:
—
logfile:
EVENT: CONNECTIONG
Tunnel Options: …
Peer Info: …
…
TCP recv EOF
Transport Error: Transport error on ‘<xxx>’: NETWORK _EOF_ERROR
Client terminated, restarting in 2…
EVENT: RECONNECTING
—-
Authentifcation mode is set to TLS with KEY CERT and CA generated by the easy-rsa utility. Except for changing auth-mode to something else I I tried (nearly) every possible mix of client-configration setting, without any success. My client-conf is based on sample-file, provided in windows openvpn package and works well with linux, windows and android openvpn clients.

Can’t tell you exactly which version of the openvpn server I use, it is included in an alternative firmware for Linksys’ WRT54G/GL routers, please see: http://tomatovpn.keithmoyer.com/

Best regards,
christian

Exactly thesame problem here!
Having a look on the server side it seems the connection never reach the server!

Dns resolution is fine (I see it in logs) but Connection Timeout: NETWORK_EOF_ERROR suddenly appears.

Are we missing something?

The same configuration works fine on Openvpn Connect on android.

Mat

Hate to add another «me to» reply, but I’m having the same issue.
The connection seems fine after first packet received, then the count down of the time since last packet received reaches <6, the connection resets.

— Using OpenVPN Connect Android Client 1.1.11 (build 44)
— Galaxy Nexus Android 4.2.2
— VPN protocol: Adaptive
— «Connection timeout»: «continuously retry»
— Compression: off
— Seamless tunnel: on

I solved this problem by reducing the size of the key on the server to 128:

I made a reset to my primary router and
now the ddwrt have the same problem.
I don’t know why, I didn’t touch the ddwrt
configs at all. But I’m facing this problem.

When I use the internal connection (192.168.x.x)
I can connect to the server , but when I use
The Internet with my external ip, it doesn’t work.
I have all configured: noip; port forward on my
primary router…. All worked fine before the router reset.

You fix the error just by adding the keysize
text on the server config, or you made
something else?
Did you creat other CRT or key file or something Else?

Best regards,

I’ve figured it out.

In my case it has nothing to do with keysize
My primary router was not properly configured.
It has several options for port forwarding.
And it wasn’t correctly configured.
Work like a charm now.

I have exactly the same log problem when I try to conect from my iPad (openvpn client) to my router (openvpn server).

when I try with udp protocol

2014-03-12 23:34:58 EVENT: RECONNECTING
2014-03-12 23:34:58 LZO-ASYM init swap=0 asym=0
2014-03-12 23:34:58 EVENT: RESOLVE
2014-03-12 23:34:58 Contacting 21X.22.XXX.XXX:1194 via UDP
2014-03-12 23:34:58 EVENT: WAIT
2014-03-12 23:34:58 Connecting to mydns.dyndns.org:1194 (21X.22.XXX.XXX) via UDPv4
2014-03-12 23:35:08 Server poll timeout, trying next remote entry...
2014-03-12 23:35:08 EVENT: RECONNECTING
2014-03-12 23:35:08 LZO-ASYM init swap=0 asym=0
2014-03-12 23:35:08 EVENT: RESOLVE
2014-03-12 23:35:08 Contacting 21X.22.XXX.XXX:1194 via UDP
2014-03-12 23:35:08 EVENT: WAIT
2014-03-12 23:35:08 Connecting to mydns.dyndns.org:1194 (21X.22.XXX.XXX) via UDPv4
2014-03-12 23:35:17 EVENT: DISCONNECTED

when I try with tcp protocol

2014-03-12 16:16:46 EVENT: RECONNECTING
2014-03-12 16:16:46 LZO-ASYM init swap=0 asym=0
2014-03-12 16:16:46 EVENT: RESOLVE
2014-03-12 16:16:46 Contacting XXX.XXX.147.121:1194 via TCP
2014-03-12 16:16:46 EVENT: WAIT
2014-03-12 16:16:46 Connecting to mydns.dyndns.org:1194 (XXX.XXX.147.121) via TCPv4
2014-03-12 16:16:46 TCP recv EOF
2014-03-12 16:16:46 Transport Error: Transport error on 'mydns.dyndns.org: NETWORK_EOF_ERROR
2014-03-12 16:16:46 Client terminated, restarting in 2...
2014-03-12 16:16:48 EVENT: RECONNECTING
2014-03-12 16:16:48 LZO-ASYM init swap=0 asym=0
2014-03-12 16:16:48 EVENT: RESOLVE
2014-03-12 16:16:48 Contacting XXX.XXX.147.121:1194 via TCP
2014-03-12 16:16:48 EVENT: WAIT
2014-03-12 16:16:48 Connecting to mydns.dyndns.org:1194 (XXX.XXX.147.121) via TCPv4
2014-03-12 16:16:48 TCP recv EOF
2014-03-12 16:16:48 Transport Error: Transport error on 'mydns.dyndns.org: NETWORK_EOF_ERROR
2014-03-12 16:16:48 Client terminated, restarting in 2...

any help?!?!

jbove wrote:Found out more about the cause of this: multiple logged in sessions. You cannot have more than one concurrent OpenVPN sessions.

+1
Now all is Ok! I can confirm:
Only ONE session at the same time can be UP with the same cert.

jbove wrote:Found out more about the cause of this: multiple logged in sessions. You cannot have more than one concurrent OpenVPN sessions.

OpenVPN Not connecting in Orbi system

Hi, i have a brandnew ORBI RBK23 system (1 router, 2 satellites), router connected to cable modem. The ORBI router as replacement for a Nighthawk R7000, on which a VPN service worked flawlessly. Connection with Samsung Android smart phone as well as iPad without problems, but Windows Notebook problems with certificates.

But not on the new ORBI: nothing at all works as far as VPN is concerned.

I did all the settings as prescribed, downloaded the right client .ovpn file, but to no avail.

Any suggestions?

HELP PLEASE!

(Firmware: v2.2.1.210; service type TUN mode: TCP; service type TAP mode: UDP; clients access VPN: all internet sites as well as home network)

Re: OpenVPN Not connecting in Orbi system

FOUND IT! Thanks to you. I changed the settings of TUN back to UDP and now it is working all right! I forgot that I initially tested it over the home network and as you said, that does not work (but it did on my previous router, so that caused my confusion). When I set the wifi on my iPad to my smart phone 4G hotspot, it works fine now!!

The only thing that is still bothering me is the lg in the windows client (notebook with windows 10). Connection is achieved all right, but in the log I see this:

Tue Nov 20 10:03:33 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Nov 20 10:03:44 2018 WARNING: this configuration may cache passwords in memory — use the auth-nocache option to prevent this

Should I start a new topic on this, or may I ask your opinion about this too? (I tried to understand what is explained in the provided openvpn.net link, but can’t get a grip on the contents; seems that I have to do a lot of programming, which seems very difficult).

But anyhow, by this conversation with you, my problems with the connection, anyway on my iPad as well as my android smart phone, are completely solved! Thank you very much!

Re: OpenVPN Not connecting in Orbi system

I have VPN working well on iPhone and iPad. 

— What happens when it does not work for you?

— Do you see any event in Logs when VPN is tried? This can show if the VPN connection request arrives to Orbi. 

— Is DDNS configured correctly and working? Do you get the correct status when clicking “Status” in the DDNS tab?

— Please note that you can’t try VPN connection while connected to your own wifi or another network using the same IP range as your own LAN. 

My Setup | Internet Fiber ONT 250↓/250↑ | ISP Telenor | Wifi Router Orbi RBR850 + RBS850 + 2x RBS750 + 3xRBS350, Wired/Wireless BH / Orbi RBR50 + 6x RBS50 + RBS40V + RBS50Y, Wired/Wireless BH | Switches NG GS208 | Time Zone CET (Sweden)

Re: OpenVPN Not connecting in Orbi system

Thanks for responding!

what happens is that i get time outs. In the log files i see each time the same error: «TCP rcv EOF» followed by «TRANSPORT_ERROR Transport error on ‘(my name).mynetgear.com: NETWORK_EOF_ERROR [ERR]»

in the DDNS, with clicking on «show status» i get the message, after a few seconde of waiting, that an update was performed a few days ago (correct, that was when i tried to setup my VPN first time) on (my name).mynetgear.com.

does this give you any clues?

Re: OpenVPN Not connecting in Orbi system

Before starting “deeper” troubleshooting, can you please first untick “Enable VPN Service” option under VPN and click Apply, then tick it again and click Apply. Anything changes?

My Setup | Internet Fiber ONT 250↓/250↑ | ISP Telenor | Wifi Router Orbi RBR850 + RBS850 + 2x RBS750 + 3xRBS350, Wired/Wireless BH / Orbi RBR50 + 6x RBS50 + RBS40V + RBS50Y, Wired/Wireless BH | Switches NG GS208 | Time Zone CET (Sweden)

Re: OpenVPN Not connecting in Orbi system

Did what you suggested, nothing changed, i keep the logged error (EOF error).

Also rebooted several times, but again, same problem.

Should i perform a total reset and renew installation? (Don’t like the idea, but on the other hand, it can be done if you think that’s wise).

Or should i delete my mynetgear address and start from scratch there, with a new address on mynetgear.com?

Re: OpenVPN Not connecting in Orbi system

— You mentioned that your TUN Mode is set to TCP. Any reason for that? The default (which I have working) is UDP.

My Setup | Internet Fiber ONT 250↓/250↑ | ISP Telenor | Wifi Router Orbi RBR850 + RBS850 + 2x RBS750 + 3xRBS350, Wired/Wireless BH / Orbi RBR50 + 6x RBS50 + RBS40V + RBS50Y, Wired/Wireless BH | Switches NG GS208 | Time Zone CET (Sweden)

Re: OpenVPN Not connecting in Orbi system

Did that after the initial udp option did not work (same problem), and on the former router Nighthawk R7000, this was the working setting…

Re: OpenVPN Not connecting in Orbi system

FOUND IT! Thanks to you. I changed the settings of TUN back to UDP and now it is working all right! I forgot that I initially tested it over the home network and as you said, that does not work (but it did on my previous router, so that caused my confusion). When I set the wifi on my iPad to my smart phone 4G hotspot, it works fine now!!

The only thing that is still bothering me is the lg in the windows client (notebook with windows 10). Connection is achieved all right, but in the log I see this:

Tue Nov 20 10:03:33 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Nov 20 10:03:44 2018 WARNING: this configuration may cache passwords in memory — use the auth-nocache option to prevent this

Should I start a new topic on this, or may I ask your opinion about this too? (I tried to understand what is explained in the provided openvpn.net link, but can’t get a grip on the contents; seems that I have to do a lot of programming, which seems very difficult).

But anyhow, by this conversation with you, my problems with the connection, anyway on my iPad as well as my android smart phone, are completely solved! Thank you very much!

Re: OpenVPN Not connecting in Orbi system

Glad that this helped. Good luck

My Setup | Internet Fiber ONT 250↓/250↑ | ISP Telenor | Wifi Router Orbi RBR850 + RBS850 + 2x RBS750 + 3xRBS350, Wired/Wireless BH / Orbi RBR50 + 6x RBS50 + RBS40V + RBS50Y, Wired/Wireless BH | Switches NG GS208 | Time Zone CET (Sweden)

Re: OpenVPN Not connecting in Orbi system

and to be complete for all readers of this topic, about the added questions concerning the log file of the windows client connection:

the line about the warning of certificates vanishes if one adds the line «remote-cert-tls server» to the .OVPN config file

the second warning, about the passwords cache, is of no real siginificance and can be ignored.

again many thanks to ekhalil!

Re: OpenVPN Not connecting in Orbi system

I’m having the same issue…I cant seem to connect to my VPN on windows 10.  I am able to connect to it no problem on my iphone and ipad.  But on windows 10, I’m getting this in the log file:

Enter Management Password:
Tue Nov 20 14:47:48 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Nov 20 14:48:53 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Nov 20 14:49:58 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Nov 20 14:51:05 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Nov 20 14:52:11 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.

Any help would be appreciated.  Thanks in advance

_______________________________________________________________________________________________________________

UPDATE:  I was trying to connect while on my home network (not sure if that matters).  I tried while on my iphone hotspot and his is what i get:

Enter Management Password:
Tue Nov 20 15:02:04 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Nov 20 15:02:06 2018 TAP-Windows adapter ‘NETGEAR-VPN’ not found

Re: OpenVPN Not connecting in Orbi system

Ok, UPDATE #2:  After researching the last log file entry, I renamed the TAP Windows Adapter to «NETGEAR-VPN».  Now I’m getting:

Enter Management Password:
Tue Nov 20 15:12:08 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Nov 20 15:12:08 2018 Could not determine IPv4/IPv6 protocol
Tue Nov 20 15:12:13 2018 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.

I just cant win!!  I already researched that as well and cant seem to find info on it.  Now any help would be appreciated.  Sorry, and thanks in advance

Re: OpenVPN Not connecting in Orbi system

Well, since I got it running, you should be able to run it too, especially with your equipment!

I suppose you have the newest ORBI firmware, and you have a valid mynetgear.com account. And you downloaded the right files (those for Windows) from the router.

In VPN settings, leave the TUN service mode and TAP service mode as it is (so leave TUN to UPD and do not change it, like I tried to no avail, to TCP)

You already renamed the TAP adapter to NETGEAR-VPN, that is necessary too.

Did you also add the line «remote-cert-tls server» to your client.ovpn file? Because when you did, the warning about the certificates should not appear. Are you sure that the (in this way edited) client.ovpn is in the C:program filesopenvpnconfig subdirectory?

And indeed, it matters that you test your VPN from a different network than your ORBI network.

Please check the above issues and let us know if this helps?

Re: OpenVPN Not connecting in Orbi system

Thanks for the fast reply…

• Yes the router and satellites are on the current firmwares
• Yes my mynetgear account is valid
• Yes I downloaded the correct config files for windows
• Both TUN and TAP are default and havnet been changed
• Yes I renamed the adapter to NETGEAR-VPN as you stated
• No, I did not add that line to my config file.  Is that simply added that to the send line?  My config file is 1 line long…very long and nothing else.  Do I add it with quotes or without?

Here is my current config file:

Only 1 line

client
dev tap
proto udp
dev-node NETGEAR-VPN
remote (removed for privacy) 12974
resolv-retry infinite
nobind
persist-key
persist-tun
ca ca.crt
cert client.crt
key client.key
cipher AES-128-CBC
comp-lzo
verb 0
sndbuf 393216
rcvbuf 393216

Not sure why it pasted as being multiple lines, that’s why i included the image.

• Lastly, yes, the config file is in the correct directory

I actually gave up until i saw your reply.  I will keep at it, but its very frustrating and shouldn’t be this hard.

Re: OpenVPN Not connecting in Orbi system

Also, opening the config file in notepad:

I added remote-cert-tls server without the quotes at the very end and when i go to save it, it says i dont have permission and need to seek file owner or administrator.  I am the administrator on the machine, only 1 user.

Re: OpenVPN Not connecting in Orbi system

Yes, that is what i saw too. So what i did was editing the ovpn file in the download directory and then copied the new / edited file to the config subdir. Here too the system complained about my rights, but there was the option to continue as administrator. And that worked.

The line is indeed to be placed at the end of the file, i put it right at the end, two spaces after the last character.

And indeed without he quotation marks!

Please inform about the result!

Re: OpenVPN Not connecting in Orbi system

Thanks again for your help…i really appreciate it.

New Errors — New Logs…so maybe a step in the right direction.  BUT, you’re right, i’m not geting the «certificate» warning anymore

Re: OpenVPN Not connecting in Orbi system

I am very sorry your problem still exists…

Btw, your client.ovpn contains exactly the same lines as mine, only mine is one long line without hard returns (in notepad), and no spaces between the lines as compared to yours (where there are hard returns). I wonder why you apparently downloaded another format…

What exactly are the «new ERRORs» you write about in your last post?

Re: OpenVPN Not connecting in Orbi system

Ah, now i can see the errors, but i do not understand them…

You have the exact lines in your (as compared to my) client.ovpn, and i also tried what would happen if i make it a file with neat 18 lines (the 18th being the added line remote-cert-tls server). No difference, works equal flawlessly.

The  only possible difference (but i do not know its significance) is that you keep also a client file in the C:users(user)openvpnconfig? Because i have not (the only place is the C:program filesopenvpnconfig, along with the 3 other files of course (ca.crt, client.crt and client.key).

If the problem still exists, you might try the good old reboot of your system and / or try the whole operation without the protection of firewalls etc.

I am afraid i can’t be of further assistance (being kind of a novice myself!)

Good luck, and please post again if you have (hopefully good) news flashes!