Ubuntu 18.04 with NAT network can ping but can't browse through VPN

[Worlden]

Hello everyone,

I've set up an Ubuntu 18.04 guest machine on my Windows 10. On my windows 10 i have a VPN on and i'd like my Ubuntu to use it as well since i'm living in a country with a censored internet. After few research it seemed that i had to use the adapter NAT with Paravirtualization which i did, then after changing the dns using my host dns i managed to finally ping google from my guest (google being blocked here) and when i turn the VPN off then it's not pinging any longer so it's working for sure.

Now problem is, it seems nothing can reach me. telnet give me this: "telnet: Unable to connect to remote host: Network is unreachable", firefox can't browse anything, i can't apt update, nothing, i can just ping.
Did you guys ever faced this issue ? I spent the last 2 days searching online but i can't fix it...

Help

[socratis]

it seems nothing can reach me

That's expected with NAT, you got to setup port-forwarding. See ch. 6.3.1. Configuring Port Forwarding with NAT.

firefox can't browse anything, i can't apt update

That's different, that's not "reaching you", that's "*you* reaching them"!. That's the opposite problem...

Post the following from your host:

• ipconfig /all
  "C:\Program Files\Oracle\VirtualBox\VBoxManage" list dhcpservers

and from your guest:

• nmcli d show

Edit:

Fixed the erroneous "VBoxBugReport list dhcpservers" to the proper "VBoxManage list dhcpservers"

[Worlden]

Thanks for your answer !

For the ipconfig:

Code: Select all

Carte Ethernet VirtualBox Host-Only Network :
   Suffixe DNS propre à la connexion. . . :
   Description. . . . . . . . . . . . . . : VirtualBox Host-Only Ethernet Adapter
   Adresse physique . . . . . . . . . . . : 0A-00-27-00-00-08
   DHCP activé. . . . . . . . . . . . . . : Non
   Configuration automatique activée. . . : Oui
   Adresse IPv6 de liaison locale. . . . .: fe80::350d:df25:8337:9ef5%8(préféré)
   Adresse IPv4. . . . . . . . . . . . . .: 192.168.56.1(préféré)
   Masque de sous-réseau. . . . . . . . . : 255.255.255.0
   Passerelle par défaut. . . . . . . . . :
   IAID DHCPv6 . . . . . . . . . . . : 1024065575
   DUID de client DHCPv6. . . . . . . . : 00-01-00-01-23-85-26-61-E0-D5-5E-F9-BE-6C
   Serveurs DNS. . .  . . . . . . . . . . : fec0:0:0:ffff::1%1
                                       fec0:0:0:ffff::2%1
                                       fec0:0:0:ffff::3%1
   NetBIOS sur Tcpip. . . . . . . . . . . : Activé

Carte Ethernet Ethernet :

   Suffixe DNS propre à la connexion. . . :
   Description. . . . . . . . . . . . . . : Realtek Gaming GbE Family Controller
   Adresse physique . . . . . . . . . . . : E0-D5-5E-F9-BE-6C
   DHCP activé. . . . . . . . . . . . . . : Oui
   Configuration automatique activée. . . : Oui
   Adresse IPv6 de liaison locale. . . . .: fe80::595a:fa84:5b7b:fecf%15(préféré)
   Adresse IPv4. . . . . . . . . . . . . .: 192.168.1.6(préféré)
   Masque de sous-réseau. . . . . . . . . : 255.255.255.0
   Bail obtenu. . . . . . . . . . . . . . : vendredi 13 septembre 2019 16:46:27
   Bail expirant. . . . . . . . . . . . . : samedi 14 septembre 2019 16:46:21
   Passerelle par défaut. . . . . . . . . : 192.168.1.1
   Serveur DHCP . . . . . . . . . . . . . : 192.168.1.1
   IAID DHCPv6 . . . . . . . . . . . : 232838494
   DUID de client DHCPv6. . . . . . . . : 00-01-00-01-23-85-26-61-E0-D5-5E-F9-BE-6C
   Serveurs DNS. . .  . . . . . . . . . . : 192.168.1.1
   NetBIOS sur Tcpip. . . . . . . . . . . : Activé

When i do the second command i get :

Code: Select all

"C:\Program Files\Oracle\VirtualBox\VBoxBugReport" list dhcpservers
Oracle VM VirtualBox Bug Report Tool 6.0.10
(C) 2019 Oracle Corporation
All rights reserved.
ERROR: No such machine 'list' (hr=0x80bb0001)

And for the guest command:

Code: Select all

GENERAL.DEVICE:                         enp0s3
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         08:00:27:88:89:BA
GENERAL.MTU:                            1500
GENERAL.STATE:                          100 (connecté)
GENERAL.CONNECTION:                     Connexion filaire 1
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveCo
WIRED-PROPERTIES.CARRIER:               marche
IP4.ADDRESS[1]:                         10.0.2.15/24
IP4.GATEWAY:                            10.0.2.2
IP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 10.0.2.2, mt = 201
IP4.ROUTE[2]:                           dst = 10.0.2.0/24, nh = 0.0.0.0, mt = 10
IP4.ROUTE[3]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt =
IP4.DNS[1]:                             10.0.2.3
IP6.ADDRESS[1]:                         fe80::eaad:2e12:1d33:671c/64
IP6.GATEWAY:                            --
IP6.ROUTE[1]:                           dst = ff00::/8, nh = ::, mt = 256, table
IP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256
IP6.ROUTE[3]:                           dst = fe80::/64, nh = ::, mt = 100

GENERAL.DEVICE:                         lo
GENERAL.TYPE:                           loopback
GENERAL.HWADDR:                         00:00:00:00:00:00
lines 1-23...skipping...
GENERAL.DEVICE:                         enp0s3
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         08:00:27:88:89:BA
GENERAL.MTU:                            1500
GENERAL.STATE:                          100 (connecté)
GENERAL.CONNECTION:                     Connexion filaire 1
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/1
WIRED-PROPERTIES.CARRIER:               marche
IP4.ADDRESS[1]:                         10.0.2.15/24
IP4.GATEWAY:                            10.0.2.2
IP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 10.0.2.2, mt = 20100
IP4.ROUTE[2]:                           dst = 10.0.2.0/24, nh = 0.0.0.0, mt = 100
IP4.ROUTE[3]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]:                             10.0.2.3
IP6.ADDRESS[1]:                         fe80::eaad:2e12:1d33:671c/64
IP6.GATEWAY:                            --
IP6.ROUTE[1]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
IP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256
IP6.ROUTE[3]:                           dst = fe80::/64, nh = ::, mt = 100

GENERAL.DEVICE:                         lo
GENERAL.TYPE:                           loopback
GENERAL.HWADDR:                         00:00:00:00:00:00
GENERAL.MTU:                            65536
GENERAL.STATE:                          10 (non-géré)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
IP4.ADDRESS[1]:                         127.0.0.1/8
IP4.GATEWAY:                            --
IP6.ADDRESS[1]:                         ::1/128
IP6.GATEWAY:                            --
IP6.ROUTE[1]:                           dst = ::1/128, nh = ::, mt = 256

Sorry i'm new with VB and VM in general Don't really know where to look, i think the port-forwarding is working fine since a can ping any servers ?

[socratis]

I'm sorry, I gave you the wrong command to try, I fixed it in my original post. But I don't need it anymore, you don't have to post the output of that VBoxManage command.

Your network setup seems fine. This is what mine looks like, very similar to yours:

$ nmcli d show
GENERAL.DEVICE:   enp0s3
GENERAL.HWADDR:   08:00:27:40:51:1a   <-- all VirtualBox NICs start with that number
IP4.ADDRESS[1]:   10.0.2.15/24
IP4.GATEWAY:      10.0.2.2
IP4.DNS[1]:       1.1.1.1

If you can "ping <DefaultGateway>", if you can "ping <DNSserver>", if you can "ping 1.1.1.1", if you can "ping download.virtualbox.org", VirtualBox is working as it should.

If you want other computers to reach you, you should change your network option to something else. Please read ch. 6.2. Introduction to networking modes including the Overview table, which shows quickly what kind of connection is required to achieve what you want.

And remember, you can always have more than one network card in your guest to cover multiple scenarios.

[Worlden]

Hey socratis ! First thanks for helping me through this i'm new with VMs and i don't even know where and what to look for

Yeah the NAT system seems to look correctly but what i want to achieve is that my guest managed to use internet through my host VPN. I checked many google page and basically everybody seems to say i need to use NAT:
https://askubuntu.com/questions/419327/ ... connection

But even if i can indeed ping some blocked services there is no way for me to use them :/ Do you have any idea about that ?

Thanks again !

[socratis]

i can indeed ping some blocked services there is no way for me to use them

VirtualBox is working as it should. You should look elsewhere for your networking connectivity. Look in your host for firewalls, proxies, antivirus filters, web-cleaning applications, redirectors, etc.