An /etc/ file that lists the hosts on a network (/etc/hosts ).

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2
votes
1answer
923 views

Domain name isn't assigned from DHCP when booting from Live CD

I downloaded the ubuntu 10.10 ISO image for AMD64. When i start the ISO ubuntu gets an IP address from my DHCP server. NetworkManager updates /etc/resolv.conf according to the DNS config provided by ...
2
votes
4answers
7k views

What would cause 'ping localhost' to fail?

the /etc/hosts file contains a line: 127.0.0.1 localhost so localhost should be a valid hostname, but any attempt to connect to a port on localhost fails, including ping. Connection attempts into ...
8
votes
3answers
43k views

How to edit hosts.deny and hosts.allow?

I want to block some hosts in Ubuntu, so how could I edit hosts.deny file to block some hosts like example.com. And one more thing I have installed dnsmasq in Ubuntu, so can I check the entries of ...
4
votes
2answers
295 views

How can I prevent Desktop Users from accessing any online website?

How can I prevent Desktop Users from accessing any online website? I tried 127.0.0.1 * in /etc/hosts but it didn't do the trick. Please note that I need to keep http://localhost fully functional. ...