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Try stopping and restarting the dhcp client service on the workstation (or reboot the workstation). 
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Try stopping and restarting the dhcp client service on the workstation (or reboot the workstation).

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I'm attempting to replace the existing small LAN dhcp server source on a win2003 server with the dhcp server function located in my firewall. I've configured the firewall from Sonicwall instructions. The win2003 dhcp server is stopped and deauthorized. However, at a workstation on the LAN, after renewing the lease, the new DHCP server is not found.<br />
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How can I make the workstation seek and find the new DHCP server? Does the workstation scan for DHCP server?
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I'm attempting to replace the existing small LAN dhcp server source on a win2003 server with the dhcp server function located in my firewall. I've configured the firewall from Sonicwall instructions. The win2003 dhcp server is stopped and deauthorized. However, at a workstation on the LAN, after renewing the lease, the new DHCP server is not found.

How can I make the workstation seek and find the new DHCP server? Does the workstation scan for DHCP server?

point to new dhcp server

The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.

Windows Networking

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.