Appendix B: Frequent Asked Questions
Q: What is a "dynamic IP address"?
A:An IP address from your ISP which is assigned via DHCP and is therefore not guaranteed to remain the same. Some cable modem Internet providers provide IP address assignments which rarely change, but the addresses assigned are still considered to be dynamic, not static.
Q: When should I modify the MAC address for global port settings?
A:Some ISPs identify their clients by their MAC address and host names. Entering this information allows authentication. The MAC address required for the global port settings is the adapter address for the device you are now configuring. Most ISPs use automatic registration and do not limit network MAC addresses. But, if they do, you can change your MAC address to meet their registration.
Q: What is DMZ?
A:DMZ (demilitarized zone) is a barrier between the Internet and a company's Intranet. It is a subnet that contains a firewall and proxy server, which can be in separate servers or in one server. The firewall connects to an external firewall on the Internet side, which may be at the ISP's location and is often called a "boundary router". The double firewall architecture adds an extra measure of security for the Intranet.
Q: What is Dynamic DNS?
A:The Dynamic DNS service is an IP Registry which provides a public central database where information such as email addresses, hostnames, Ips etc. can be stored and retrieved. This can be a solution if your DNS server uses an IP associated with dynamic IP. The Dynamic DNS service acts like an
Q: Why "Dynamic DNS"?
A:With Dynamic DNS support, you can have a static hostname alias for a dynamic IP address, allowing the host to be more easily accessible from various locations on the Internet. You must register with a Dynamic DNS Client to use this service. Please go to http:// www.dyndns.org for more information.
Q: What is Wildcard?
A:A wildcard alias is a method that is used to give your hostname multiple identities. If you were to register yourhost.com, everything (*).yourhost.com would be aliased to yourhost.com. This includes host names such as www.yourhost.com or ftp.yourhost.com . Once Wildcard feature was enabled, your host can be reached by *.yourhost.dyndns.org. First, you need to register a dynamic DNS account with www.dyndns.org. To use this service, you must register with the Dynamic DNS client. The Dynamic DNS client service provider will give you a password or key. Refer to what's Dynamic DNS? Question above for more information.
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