Yesterday I did some upgrades using YUM. Today, I open my computer and tried to navigate the internet to find the browser saying: "The site can't be reached" - "www.youtube.com's server DNS address could not be found.
I first thought it's a DNS issue .. open the network manager and on my ethernet connection, I entered 8.8.8.8 and 8.8.4.4. .. again, this didn't solve the problem. I went to the terminal and pinged these 2 DNS servers and they replied successfully .. then tried to ping anything else, but failed .. even when using the IP address of well-known site like CNN or so.
I ran the following command to make sure my ethernet connection is healthy or not:
ifconfig -a
and successfully i found my ethernet interface already assigned a local IP = 192.168.1.107 .. netmask= 255.255.255.0 and broadcast- 192.168.1.255
I don't know where is the problem? .. is it something with the firewall? .. SELinux? .. I'm really lost. I'm writing now from another machine and it's not easy to copy what I see on my CentOS box. I tried to roll back my yum updates but also failed
Please help!