Ubuntu 14.04. Connected to airVPN, but some part of internet doesn't work

[Dominis 0]

Hi everyone.

 

Sry if i haven't found an answer here, but i've tried.

 

I am totally new user of vpn and airVPN too, i've installed airVPN software from .deb package, connect to the server and my browser now can't open some sites. (if i disconnect everything works fine)

For example: i can use google, can search there, but i can't get my email in gmail. Just getting the empty page with "ERR_NETWORK_CHANGED".

The same for some part of other sites. I've tried to ping mail.google.com, check the nslookup for this domain and traceroute. Data is listed below.

 

$ ping mail.google.com

PING googlemail.l.google.com (216.58.212.69) 56(84) bytes of data.

64 bytes from lhr35s05-in-f5.1e100.net (216.58.212.69): icmp_seq=1 ttl=56 time=92.3 ms

64 bytes from lhr35s05-in-f5.1e100.net (216.58.212.69): icmp_seq=2 ttl=56 time=92.7 ms

64 bytes from lhr35s05-in-f5.1e100.net (216.58.212.69): icmp_seq=3 ttl=56 time=92.0 ms

64 bytes from lhr35s05-in-f5.1e100.net (216.58.212.69): icmp_seq=4 ttl=56 time=91.7 ms

 

 

$ nslookup mail.google.com

Server: 10.4.0.1

Address: 10.4.0.1#53

 

Non-authoritative answer:

mail.google.com canonical name = googlemail.l.google.com.

Name: googlemail.l.google.com

Address: 108.177.96.17

Name: googlemail.l.google.com

Address: 108.177.96.83

Name: googlemail.l.google.com

Address: 108.177.96.18

Name: googlemail.l.google.com

Address: 108.177.96.19

 

$ sudo traceroute -I mail.google.com

[sudo] password for dominis: 

traceroute to mail.google.com (216.58.212.69), 30 hops max, 60 byte packets

 1  10.4.0.1 (10.4.0.1)  83.044 ms  83.087 ms  83.107 ms

 2  vlan31.as01.bru3.be.m247.com (194.187.251.153)  83.742 ms  83.778 ms  84.034 ms

 3  vlan1101.bb1.bru1.be.m247.com (176.10.82.126)  83.197 ms  83.477 ms  83.503 ms

 4  xe-0-0-1-0.bb2.bru1.be.m247.com (176.10.82.41)  83.751 ms  83.991 ms  84.006 ms

 5  te-1-5-1-0.bb1.ams2.nl.m247.com (193.27.64.145)  87.689 ms  87.757 ms  87.773 ms

 6  core2.ams.net.google.com (80.249.209.100)  88.526 ms  87.868 ms  87.850 ms

 7  108.170.241.131 (108.170.241.131)  88.175 ms  88.412 ms  88.384 ms

 8  209.85.241.69 (209.85.241.69)  121.897 ms  87.735 ms  87.720 ms

 9  209.85.251.13 (209.85.251.13)  92.247 ms  92.447 ms  92.549 ms

10  72.14.237.52 (72.14.237.52)  91.999 ms  92.661 ms  92.945 ms

11  108.170.246.225 (108.170.246.225)  92.616 ms  92.109 ms  92.095 ms

12  72.14.234.129 (72.14.234.129)  92.098 ms  92.383 ms  92.393 ms

13  lhr35s05-in-f69.1e100.net (216.58.212.69)  92.456 ms  92.031 ms  92.120 ms

 

 

Seems like everything is fine, at least i don't see any issue. But gmail isn't accessible for me. And the same with few other sites. For example yandex.ru - it doesn't accessible at all, not only the emails.

Can i have some help?

[zhang888 1065]

Flush your browser cache and DNS cache.

[Dominis 0]

Seems like it doesn't help. I've tried to flush my cache in FF - it has no affects. I've googled how to flush dns on ubuntu, and found info that there is no default soft for dns-cache, so i have nothing to flush. 

Any other ideas? Or maybe i need to prove some info?

 

P.S. Tested airVPN on the Windows 10 and iPad - works perfect. So it's not a some kind of hardware issue with router/pc

[OpenSourcerer 1360]

sudo systemctl restart nscd

Because there is a caching daemon.

[Dominis 0]

 

sudo: systemctl: command not found

 

Thx for try, but i don't have it

 

Any other variants?

[OpenSourcerer 1360]

sudo service nscd restart

sudo /etc/init.d/nscd restart

One of the two, both do the same.

[Dominis 0]

 

sudo service nscd restart

sudo /etc/init.d/nscd restart

One of the two, both do the same.

 

And both can't be run at my system, 'cause i don't have this daemon.

 

root@ubuntu-dmitry:~# whereis nscd
nscd:
 

But i have installed it, just for being sure that i really didn't have it before. Now i can restart this daemon with both commands you've given me.

 

root@ubuntu-dmitry:~# whereis nscd
nscd: /usr/sbin/nscd /etc/nscd.conf /usr/share/man/man8/nscd.8.gz 

root@ubuntu-dmitry:~# /etc/init.d/nscd restart
 * Restarting Name Service Cache Daemon nscd 

But it doesn't help. :/ I still can't use gmail via airVPN on ubuntu ((

[OpenSourcerer 1360]

Hehe, sorry. I assumed at this point you'd go a little further by yourself, for example searching for this error on the internet... I did some searching, though, and found out that Ubuntu doesn't have a DNS caching daemon installed by default. So there's that.

 

Did you try other browsers? If all your tools were able to reach that site, maybe your browser's plugins or configuration are interfering?

 

Then, you omitted your logs which have further information on your OS, software versions, the server you were connecting to and the protocol used.

[Dominis 0]

Hehe, sorry. I assumed at this point you'd go a little further by yourself, for example searching for this error on the internet... I did some searching, though, and found out that Ubuntu doesn't have a DNS caching daemon installed by default. So there's that.

 

Really i didn't try to search for this error because i didn't think it related to something except the airVPN.

 

Did you try other browsers?

If all your tools were able to reach that site, maybe your browser's plugins or configuration are interfering?

I was pretty sure i did write that i checked connection in FireFox, but i didn't. Sorry for that. FF has the same behavior: long-time request and noting in the end.

Both my browsers don't use any extension that can make affect on connection. 

But i've tried to disable every extension in chrome - nothing is changed.

 

I have no proxy, so i don't see any configurations that can interferer.

I've checked different servers in different countries - no changes. 

Logs are attached.

tcp.txt

ssl.txt

all tries.txt

udp.txt

[OpenSourcerer 1360]

Well, there are some error lines in the UDP logs but I think they are not relevant here as TCP and SSL work and you experience the same problem.

 

Did you try a connection with plain OpenVPN?

If not, generate a config in the config generator and do

sudo openvpn AirVPN_whatever_whatever.ovpn

[Dominis 0]

Sry for the delay with answer. I've tried to use openVPN via config from configurator you've given me.  I have the same issue with openVPN.

I've attached config with removed keys.

config.txt