![]() ![]() When to take action from unknown IP settings Unknown IP Addresses is also a good place to find rogue wireless routers, as they will be using an IP address range outside of the normal, corporate IP ranges. Tip: Use the Unknown IP Addresses settings to identify rogue wireless routers Some might be related to DHCP servers or VPN servers that you haven't configured yet, or some might be static IP ranges or unmanaged. This helps you see if you are missing a DHCP or VPN event source in your environment that needs to be hooked up to a Collector. Therefore, InsightIDR reports unknown IP addresses originating from other event sources. Adding a VPN event source to capture the logs will allow InsightIDR to associate the activity performed by the IP address with the user on the VPN connection. In addition, sometimes the IP addresses are assigned to users when they establish a connection to a VPN server. IP address ranges that are not part of the DHCP scope can be listed in the Static IP Ranges section, so that a reverse DNS lookup will be done to map the IP address to a hostname. However, sometimes logs come in from other event sources, and those logs come with IPs that have never been seen by your DHCP or VPN event sources.įor most IPs, DHCP will allow InsightIDR to match the IP with a hostname. InsightIDR tracks all IP addresses it receives from DHCP and VPN assignments. Knowing the unknown is a constant challenge for security practitioners, especially when it comes to knowing the various devices on the corporate network. Marking IP ranges as unmanaged or static.Using the Insight Network Sensor to observe DHCP activity, or.Installing the Insight Agent on the assets,.Ideally, you should be able to get the unknown IPs down to zero by: How many IP ranges should be listed under Unknown IP Addresses Settings? These IPs are displayed in Settings so you can have visibility and take action. Unknown IP addresses are IPs that InsightIDR has observed in logs (like Firewall, DNS or Web Proxy logs), but cannot tell which asset is using that IP address. You will also find information about when to use them, how they work in detail and how to specify them in Settings. This documentation has a definition for each option. Public IP Ranges (this setting is rarely used).You can manually sort different IP Addresses in Settings to attribute data to your users and assets with more precision. InsightIDR gathers this information by using DHCP and VPN event sources, as well as the Insight Agent. To do so, InsightIDR needs to understand the relationship between the IP addresses on your network and the assets using those IP addresses. InsightIDR can accurately attribute many types of activity to assets and users.
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