Ping can't resolve names; Firefox can
Iíve just installed Ubuntu Linux, dual booting with Windows XP. My computer is connected to my companyís LAN, which uses ISA as a proxy server.
My problem is that I cannot resolve names such as www.google.com whilst pinging from the terminal, but I can enter the same names into Firefox and browse the sites.
I cannot resolve names for machines on the LAN with ping. Apt-get check fails with a Ďtemporary failure resolving namesí error message and in fact I get this same message when booting (when all the checks are being made). Other programs such as the BitTorrent client fail with the same error. However, during the install process I successfully downloaded the latest security updates for Ubuntu so presumably something was working correctly then.
My IP is static (there is no DHCP server on the network). On my Windows box the option to specify a gateway and nameserver is selected, but no name or IP is entered (so where is Windows getting its information?). My /etc/resolv.conf contains a nameserver entry with the IP address of the ISA proxy.
Iím really out of ideas. To be honest I donít understand why Firefox works successfully yet something basic like pinging does not. Any help would be greatly appreciated.