Centos7 does not able to ping internet (google.com/hotmail.com/etc)

z_haseeb · 02-15-2017, 10:21 PM

I have Centos7 core(openstack "fuel-community-10.0.iso") VM is installed. This VM is behind firewall. DNS is properly configured in /etc/resolv.conf. NSLOOKUP is properly resolving domain names. However when I ping any external domain name it is not happening. Even I disabled selinux from /etc/selinux/config and rebooted VM. The same permission is given to windows machines and ping response is fine.

ferrari · 02-15-2017, 11:05 PM

Which VM? Version? Are you using bridged networking or NAT (I'm guessing the latter)?

FWIW, here's a vbox bug report (which may or may not be relevant)...
https://www.virtualbox.org/ticket/15575

frankbell · 02-15-2017, 11:20 PM

I have a CentOS 7 VM in VirtualBox on Slackware --Current using a bridged adapter. I can ping internet sites without issue.

I don't have a solution to offer, but I can say that, whatever your issue is, it's local to your configuration.

z_haseeb · 02-15-2017, 11:29 PM

NAT. I am using VMplayer12 on windows machine

ferrari · 02-16-2017, 02:03 AM

Quote:

DNS is properly configured in /etc/resolv.conf. NSLOOKUP is properly resolving domain names. However when I ping any external domain name it is not happening.

Hmmm... perhaps have a look at /etc/nsswitch.conf and make sure that the name resolution service order is not causing the problem

Code:

grep hosts /etc/nsswitch.conf