Virtualbox and DNS resolution
Clash Royale CLAN TAG#URR8PPP
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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
edited Feb 26 at 12:13
Pierre.Vriens
94241015
asked Feb 26 at 11:31
Nassim Quelconque
1
add a comment |Â
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
edited Feb 26 at 12:13
Pierre.Vriens
94241015
asked Feb 26 at 11:31
Nassim Quelconque
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
add a comment |Â
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
edited Feb 26 at 12:13
Pierre.Vriens
94241015
asked Feb 26 at 11:31
Nassim Quelconque
1
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
edited Feb 26 at 12:13
Pierre.Vriens
94241015
asked Feb 26 at 11:31
Nassim Quelconque
1
edited Feb 26 at 12:13
Pierre.Vriens
94241015
edited Feb 26 at 12:13
Pierre.Vriens
94241015
edited Feb 26 at 12:13
Pierre.Vriens
94241015
94241015
asked Feb 26 at 11:31
Nassim Quelconque
1
asked Feb 26 at 11:31
Nassim Quelconque
1
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
add a comment |Â
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
add a comment |Â
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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