Virtualbox and DNS resolution

Multi tool use
Multi tool use

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
0
down vote

favorite












I created a virtual NAT network with 3 VM turning with Ubuntu.



I have a VM with two virtual network cards to be a router which is connected to the WAN and the LAN.



I have two other VM in the LAN.



When I ping public ip like the ip of Google with any VM, it works.



But only the router can resolve dns.



I configured the dns server on the others VM as 8.8.8.8, and I restarted the network.



I can ping 8.8.8.8, and in the conf file all is alright but when I do "apt-get update" or I go to google.fr in Firefox , it doesn't works because I can't resolve any dns.



Any help?




ubuntu virtualbox dns nat




share|improve this question






















  • The systems that have problems do have /etc/resolv.conf with "nameserver 8.8.8.8" and they can ping 8.8.8.8? If so, is a firewall involved?
    – Gerard H. Pille
    Feb 26 at 15:55










  • On the iptables rules I allow POSTROUTING anywhere to anywhere for everybody, INPUT and OUTPUT have default config. Is the firewall able to allowing to ping the server but preventing dns resolution?
    – Nassim Quelconque
    Feb 28 at 11:01










  • That is possible, ICMP (ping) is not UDP is not TCP, iptables can handle each one diferently. Just to be sure: what error do you get with "nslookup www.google.be"? Concerning postrouting, you do nat too?
    – Gerard H. Pille
    Feb 28 at 11:49















up vote
0
down vote

favorite












I created a virtual NAT network with 3 VM turning with Ubuntu.



I have a VM with two virtual network cards to be a router which is connected to the WAN and the LAN.



I have two other VM in the LAN.



When I ping public ip like the ip of Google with any VM, it works.



But only the router can resolve dns.



I configured the dns server on the others VM as 8.8.8.8, and I restarted the network.



I can ping 8.8.8.8, and in the conf file all is alright but when I do "apt-get update" or I go to google.fr in Firefox , it doesn't works because I can't resolve any dns.



Any help?




ubuntu virtualbox dns nat




share|improve this question






















  • The systems that have problems do have /etc/resolv.conf with "nameserver 8.8.8.8" and they can ping 8.8.8.8? If so, is a firewall involved?
    – Gerard H. Pille
    Feb 26 at 15:55










  • On the iptables rules I allow POSTROUTING anywhere to anywhere for everybody, INPUT and OUTPUT have default config. Is the firewall able to allowing to ping the server but preventing dns resolution?
    – Nassim Quelconque
    Feb 28 at 11:01










  • That is possible, ICMP (ping) is not UDP is not TCP, iptables can handle each one diferently. Just to be sure: what error do you get with "nslookup www.google.be"? Concerning postrouting, you do nat too?
    – Gerard H. Pille
    Feb 28 at 11:49













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I created a virtual NAT network with 3 VM turning with Ubuntu.



I have a VM with two virtual network cards to be a router which is connected to the WAN and the LAN.



I have two other VM in the LAN.



When I ping public ip like the ip of Google with any VM, it works.



But only the router can resolve dns.



I configured the dns server on the others VM as 8.8.8.8, and I restarted the network.



I can ping 8.8.8.8, and in the conf file all is alright but when I do "apt-get update" or I go to google.fr in Firefox , it doesn't works because I can't resolve any dns.



Any help?




ubuntu virtualbox dns nat




share|improve this question














I created a virtual NAT network with 3 VM turning with Ubuntu.



I have a VM with two virtual network cards to be a router which is connected to the WAN and the LAN.



I have two other VM in the LAN.



When I ping public ip like the ip of Google with any VM, it works.



But only the router can resolve dns.



I configured the dns server on the others VM as 8.8.8.8, and I restarted the network.



I can ping 8.8.8.8, and in the conf file all is alright but when I do "apt-get update" or I go to google.fr in Firefox , it doesn't works because I can't resolve any dns.



Any help?





ubuntu virtualbox dns nat





share|improve this question













share|improve this question




share|improve this question








edited Feb 26 at 12:13









Pierre.Vriens

94241015




94241015










asked Feb 26 at 11:31









Nassim Quelconque

1




1











  • The systems that have problems do have /etc/resolv.conf with "nameserver 8.8.8.8" and they can ping 8.8.8.8? If so, is a firewall involved?
    – Gerard H. Pille
    Feb 26 at 15:55










  • On the iptables rules I allow POSTROUTING anywhere to anywhere for everybody, INPUT and OUTPUT have default config. Is the firewall able to allowing to ping the server but preventing dns resolution?
    – Nassim Quelconque
    Feb 28 at 11:01










  • That is possible, ICMP (ping) is not UDP is not TCP, iptables can handle each one diferently. Just to be sure: what error do you get with "nslookup www.google.be"? Concerning postrouting, you do nat too?
    – Gerard H. Pille
    Feb 28 at 11:49

















  • The systems that have problems do have /etc/resolv.conf with "nameserver 8.8.8.8" and they can ping 8.8.8.8? If so, is a firewall involved?
    – Gerard H. Pille
    Feb 26 at 15:55










  • On the iptables rules I allow POSTROUTING anywhere to anywhere for everybody, INPUT and OUTPUT have default config. Is the firewall able to allowing to ping the server but preventing dns resolution?
    – Nassim Quelconque
    Feb 28 at 11:01










  • That is possible, ICMP (ping) is not UDP is not TCP, iptables can handle each one diferently. Just to be sure: what error do you get with "nslookup www.google.be"? Concerning postrouting, you do nat too?
    – Gerard H. Pille
    Feb 28 at 11:49
















The systems that have problems do have /etc/resolv.conf with "nameserver 8.8.8.8" and they can ping 8.8.8.8? If so, is a firewall involved?
– Gerard H. Pille
Feb 26 at 15:55




The systems that have problems do have /etc/resolv.conf with "nameserver 8.8.8.8" and they can ping 8.8.8.8? If so, is a firewall involved?
– Gerard H. Pille
Feb 26 at 15:55












On the iptables rules I allow POSTROUTING anywhere to anywhere for everybody, INPUT and OUTPUT have default config. Is the firewall able to allowing to ping the server but preventing dns resolution?
– Nassim Quelconque
Feb 28 at 11:01




On the iptables rules I allow POSTROUTING anywhere to anywhere for everybody, INPUT and OUTPUT have default config. Is the firewall able to allowing to ping the server but preventing dns resolution?
– Nassim Quelconque
Feb 28 at 11:01












That is possible, ICMP (ping) is not UDP is not TCP, iptables can handle each one diferently. Just to be sure: what error do you get with "nslookup www.google.be"? Concerning postrouting, you do nat too?
– Gerard H. Pille
Feb 28 at 11:49





That is possible, ICMP (ping) is not UDP is not TCP, iptables can handle each one diferently. Just to be sure: what error do you get with "nslookup www.google.be"? Concerning postrouting, you do nat too?
– Gerard H. Pille
Feb 28 at 11:49
















active

oldest

votes











Your Answer







StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "106"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
convertImagesToLinks: false,
noModals: false,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);








 

draft saved


draft discarded


















StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f426660%2fvirtualbox-and-dns-resolution%23new-answer', 'question_page');

);

Post as a guest






















active

oldest

votes













active

oldest

votes









active

oldest

votes






active

oldest

votes










 

draft saved


draft discarded


























 


draft saved


draft discarded














StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f426660%2fvirtualbox-and-dns-resolution%23new-answer', 'question_page');

);

Post as a guest
































































gUPAxgLTJlTaLw x3JMs9Ir,vpjNCoeC7h,qHMgW mr,gfYw cB,noBwIB HYhTCBYyVLSsAD6tXbaBj0oemRBLSUsZUqnIGfiC C,i
-
IigErdq8aILZPY7hAkz7dgSRkSsiRR,iEwvP,Go2GXel LS

Popular posts from this blog

How to check contact read email or not when send email to Individual?

Image
Clash Royale CLAN TAG #URR8PPP up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this question asked Sep 26 at 0:12 ToanLuong 49 9 add a comment  |  up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this questi...
Read more

How many registers does an x86_64 CPU actually have?

Image
Clash Royale CLAN TAG #URR8PPP up vote 2 down vote favorite I am currently learning reverse engineering and am studying the flags register. I had in my mind that rflags was just another name for one of the 16 general purpose registers, for example rax or rbx . But it looks like rflags is actually an additional register. So that makes 17 registers in total... how many more could there be? I have spent at least an hour on this and found numerous different answers. The best answer so far is this, which says that there are 40 registers in total. 16 General Purpose Registers 2 Status Registers 6 Code Segment Registers 16 SSE Registers 8 FPU/MMX Registers But if I add that up, I get 48. Could anybody provide an official answer on how many registers an x86_64 CPU has (e.g. an Intel i7). Additionally, I have seen references to 'hardware' and 'architectural' registers. What are those registers and how many are there? register x86-64 share | improve this...
Read more

Displaying single band from multi-band raster using QGIS

Image
Clash Royale CLAN TAG #URR8PPP 1 How can I extract a single band from multi-band raster in QGIS? I have an remote sensed image which has 6 bands (including NDVI band), I want to display each band separately, but have no idea how to do. I have seen some questions similar here but none worked for me. The original image (has 6 bands) is: I want to display the band 6 which should be like this: But I tried gdal_translate, and couldn't get the correct result. What I have got is: qgis raster multi-band share | improve this question edited Mar 5 at 0:53 Summer asked Mar 4 at 6:42 Summer Summer 23 6 Is this any help gis.stackexchange.com/questions/220658/… ? if not gis.stackexchange.com/questions/62133/… might help. – Michael Stimson Mar 4 at 6:46 Thanks for answering but when I used gdal_translate, qgis showed that 'Error 4: Kayena.tif: No such file or directory". Would you know how to fi...
Read more