You work as the network administrator at Cer-tech.com. The Cer-tech.com Net work consists of a single Active Directory domain named Cer-tech.com. The Cer-tech.com network consists of a server named…

You work as the network administrator at Cer-tech.com. The Cer-tech.com Net work consists of a single Active Directory domain named Cer-tech.com. The Cer-tech.com network consists of a server named Server01. Server01 is configured to run Microsoft Small Business Server 2003. The user computers at Cer-tech.com are assigned IP addresses through DHCP. You have received instruction from the Manager to install a high-security firewall device between the company network and the Internet. You have received several complaints from users stating that they are unable to access the web pages on the Internet. You thus need to troubleshoot the problem. Upon addressing the problem you find that you are able to effectively ping the internal server as well as the ISP's DNS server from the user computer. You are also able to resolve DNS queries for internal names successfully. However, the DNS queries for domain names fail on the Internet. You need to make sure that the user computers are able to resolve internal as well as external domain names. What should you do?