Network administrators face numerous challenges in maintaining a secure and stable infrastructure, but few are as insidious as rogue DHCP servers. These unauthorized servers can wreak havoc on your network, causing connectivity issues, security breaches, and hours of troubleshooting headaches. Whether introduced maliciously by an attacker or accidentally by a well-meaning employee who plugged in their home router, rogue DHCP servers represent a serious threat that demands immediate attention.
The Dynamic Host Configuration Protocol (DHCP) is fundamental to modern networking, automatically assigning IP addresses and network configuration to devices.
Shodan is a search engine for the internet of things (IoT). It allows users to search for specific types of internet-connected devices, such as security cameras or industrial control systems, and view information about them, such as their location, their internet protocol (IP) address, and their manufacturer.
DHCP stands for dynamic host configuration protocol and is a network protocol used on IP networks where a DHCP server automatically assigns an IP address and other information to each host on the network so they can communicate efficiently with other endpoints.
DHCP snooping is a security feature that acts as a firewall between untrusted hosts and trusted DHCP servers.
To protect your network against rogue DHCP servers and remove malicious or malformed DHCP traffic, the DHCP snooping needs to be configured on LAN switches to block the unwanted traffic.
A DHCP (Dynamic Host Configuration Protocol) server is a networking service that automatically assigns IP addresses to devices on a network.
A “rogue” DHCP server is one that has been set up without the network administrator’s knowledge or permission, and can cause conflicts and connectivity problems on the network.
