Can ping dlink router but no internet

[twentytwo]

Hi,

I switched my ISP modem/router to D-Link Cobra modem/router and can connect to the internet from different devices but when I tried to ping google.com via server command failed to reach the site but can ping the router successfully. What info do I need to present to you guys to analyise and steps I need to do to get the server connect to the internet and receive update?

Extracted content from interfaces

auto lo
iface lo inet loopback

iface eno2 inet manual

auto vmbr0
iface vmbr0 inet static
address 192.168.1.190
netmask 255.255.255.0
gateway 192.168.1.1
bridge_ports eno2
bridge_stp off
bridge_fd 0

iface enp6s0 inet manual

 

[Stoiko Ivanov]

Do you have DNS setup correctly?
can you ping 8.8.8.8 ?

 

[twentytwo]

The server response to ping 8.8.8.8 and the result is here.

PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=54 time=36.0 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=54 time=35.9 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=54 time=35.10 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=54 time=36.1 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=54 time=36.1 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=54 time=35.10 ms
^C
--- 8.8.8.8 ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 12ms
rtt min/avg/max/mdev = 35.939/36.019/36.130/0.171 ms

I am not sure which step to check DNS setup? Mind I ask how ?

 

[Stoiko Ivanov]

usually on UNIX and Linux systems you write the DNS-servers in the file '/etc/resolv.conf'
e.g.

search proxmox.com
nameserver 8.8.8.8

 

[twentytwo]

I edited the resolv.conf file, saved and reboot the system. pinged response to google.com is working. Thank you.

The original file was

search thirtythree.io
nameserver 127.0.0.1

I assume that the original nameserver is for local setup ? I am confuse to why the original file does not work but the edited version does. Can you clarify the different between the two?

 

[Stoiko Ivanov]

127.0.0.1 is the loopback-ip - i.e. one bound on your server.

Setting this as DNS-server has as prerequisite that you have a DNS-server running on the machine (e.g. unbound)

setting it to 8.8.8.8 makes you use the publicly available DNS provided by google.


I hope this explains it!

 

[twentytwo]

Make sense, thank you