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Review: DNS/DHCP Appliances: Page 2 of 16

Moreover, those considering VoIP or NAC will benefit from advanced DNS and DHCP systems that provide such niceties as tiered management, IP address management and reporting, enterprise configuration capabilities, and redundancy beyond the high-availability features standard in DNS and DHCP protocols (for more on this, see "Poor Man's NAC?").

Bottom line, even if you find editing DNS zone files by hand relaxing, consider the named.conf file bedtime reading and hum "Please Release Me" while configuring dhcpd.conf, it's time to get with the program. Simplified DNS and DHCP have long been available in Microsoft products, and today even many open-source projects simplify ISC BIND (Berkeley Internet Name Daemon) and DHCP configuration; at the very least, the days of remembering when a name ends with a period or when it doesn't should be behind you.

Tracking Active Directory Integration

Initial DNS/DHCP installations aren't all that interesting: You cut your teeth the first time and subsequent deployments go more smoothly. However, to ensure a smooth deployment, you do have to prepare by laying out your IP addressing scheme, defining DHCP lease pools and defining DNS zones. For more information on our test network, see "Synopsis" below.

After we configured the appliances for our network, we integrated with Active Directory. Active Directory migration was pretty simple for all the products. We first configured the DNS servers, then pointed Active Directory at them. With MetaInfo's Enterprise Server Appliance (ESA), we configured an Active Directory zone during the zone definition phase, and then the management station created all of the subzones required. With Infoblox DNSone, we exported data from the DNS server on Active Directory; ran the exported data through a conversion wizard, which formatted the zone information into BIND 9; and imported the zone into the DNS server. With INS IPControl Sapphire we only had to reboot the Active Directory systems for them to register with the DNS server. Nice.