You must have a PPP account with an Internet service provider to connect to the Internet. At a minimum, you'll need the following information about your account:
The username and password.
The phone number for your ISP's modem.
The Internet Protocol (IP) addresses of your ISP's domain name servers, and the ISP's domain name. The addresses will look something like 18.104.22.168 or 22.214.171.124, and the domain name might be the name of the ISP with .com, .org, or .edu appended.
After you have this information, the next step is to create or edit the resolver configuration file, /etc/resolv.conf. This file contains the DNS addresses used by email, newsreaders, or Web browsers to look up valid Internet addresses. The DNS ...