DHCP Consulting

Zwiegnet provides advanced DHCP expertise using ISC DHCP (the proven standard) and modern Kea for organizations requiring reliable, scalable IP address management across large or multi-site networks on Linux and Unix platforms.

Our DHCP services include:

• Server Configuration – ISC DHCPd or Kea setup with subnets, pools, ranges, reservations, options (routers, DNS, NTP, PXE), and class/vendor matching.
• Dynamic DNS Updates – Secure integration with BIND (TSIG keys, nsupdate), Windows DNS, or PowerDNS for automatic forward/reverse record creation on lease assignment.
• Failover & High Availability – ISC DHCP failover protocol (primary/secondary sync), Kea high-availability hooks, or load-balanced configurations.
• Multi-Site & VLAN Support – Relay agent (dhcrelay) configuration, shared-network declarations, and per-VLAN/subnet policies across distributed locations.
• Security Hardening – MAC address filtering, DHCP snooping integration, rate limiting, and protection against rogue DHCP servers or spoofing.
• PXE & Network Booting – Full PXE boot support for Kickstart, Jumpstart, or Windows deployment with next-server and filename options.
• Lease Management & Monitoring – Lease database optimization (MySQL/PostgreSQL backends for Kea), custom logging, and integration with Nagios/Prometheus.
• IPv6 Support – DHCPv6 and stateless/stateful configuration, prefix delegation, and dual-stack environments.
• Migration – Transition from ISC DHCP to Kea, or from Windows DHCP Server to open-source solutions with zero downtime.
• Troubleshooting & Auditing – Diagnosis of lease exhaustion, relay issues, DDNS failures, duplicate IPs, and full network DHCP health checks.

Accurate DHCP and dynamic DNS integration are essential for network stability and automated host registration — we ensure your infrastructure scales reliably across sites and devices.

Located between Madison and Milwaukee, Wisconsin since 2009 — direct access to experienced DHCP engineers with large, multi-site production deployments.