To maintain coverage in networks or broadcast segments that don t use DHCP servers, you must install at least one sensor on each broadcast segment using static IP addresses. DHCP deployment can be used with segment specific deployment of the Rogue System Sensor for the most comprehensive coverage. The epolicy Orchestrator 4. To protect the system from failing due to a lack of memory, the Rogue System Sensor 4.
If it drops below five percent, the sensor shuts down. Once the available memory increases, the sensor restarts. Passive listening to layer-2 traffic To detect systems on the network, the sensor uses WinPCap, a packet capture library.
It captures layer 2 broadcast packets sent by systems that are connected to the same network broadcast segment. It does this by listening to the broadcast traffic of all devices in its broadcast segment, and by using NetBIOS calls, actively probing the network to gather additional information about the devices connected to it, such as the operating system of a detected system.
The sensor doesn't determine whether the system is a rogue system. It detects systems connected to the network and reports these detections back to the McAfee epo server, which determines whether the system is rogue based on user configured settings. Intelligent filtering of network traffic The sensor filters network traffic "intelligently" it ignores unnecessary messages and captures only what it needs, which is Ethernet and IP broadcast traffic.
By filtering out unicast traffic, which might contain non local IP addresses, the sensor focuses only on devices that are part of the local network.
To optimize performance and minimize network traffic, the sensor limits its communication to the server by relaying only new system detections, and by ignoring any re detected systems for a user configured time. For example, the sensor detects itself among the list of detected systems. If the sensor sent a message every time it detected a packet from itself, the result would be a network overloaded with sensor detection messages.
For each detected system, the sensor adds the MAC address to the packet filter, so that it is not detected again, until the user configured time elapses. The sensor implements aging on the MAC filter. After a specified time, MAC addresses for systems already detected are removed from the filter, causing those systems to be re detected and reported to the server.
This process ensures that you receive accurate and current information about detected systems. Data gathering and communications to the server When the sensor detects a local network system, that is not already in the cache or blocked by a policy, it gathers information about that system by actively listening to NetBIOS calls and OS fingerprinting. The Rogue System Sensor listens on the ports shown in the following table.
This is a list of all ports, for example OS fingerprints and more. The server then uses the epolicy Orchestrator data to determine whether the system is a rogue system. You can configure the agent to cache detection events for a given time period, such as one hour, then to send a single message containing all the events from that time period. For more information, see Configuring Rogue System Detection policy settings.
Systems that host sensors Install sensors on systems that are likely to remain on and connected to the network at all times, such as servers. If you don t have a server running in a given broadcast segment, install sensors on several workstations to ensure that at least one sensor is connected to the network at all times. To guarantee that your Rogue System Detection coverage is complete, you must install at least one sensor on each broadcast segment of your network.
Installing more than one sensor on a broadcast segment doesn't create issues around duplicate messages because the server filters any duplicates. However, additional active sensors on each subnet result in traffic sent from each sensor to the server. While maintaining as many as five or ten sensors in a broadcast segment should not cause any bandwidth issues, you should not maintain more sensors on a broadcast segment than is necessary to guarantee coverage.
Using sensors on DHCP servers reduces the number of sensors you need to install and manage on your network to ensure coverage, but it doesn't eliminate the need to install sensors to network segments that use static IP address. Installing sensors on DHCP servers can improve coverage of your network. However, it is still necessary to install sensors in broadcast segments that use static IP address, or that have a mixed environment.
A sensor installed on a DHCP server doesn't report on systems covered by that server if the system uses a static IP address. Rogue System Sensor status Rogue System Sensor status is the measure of how many of the sensors installed on your network are actively reporting to the McAfee epo server, and is displayed in terms of health.
Health is determined by the ratio of active sensors to missing sensors on your network. Sensor states are categorized into these groups: Active Active sensors report information about their broadcast segment to the McAfee epo server at regular intervals, over a fixed time.
Both the reporting period and the active period are user configured. All of the sensors on a subnet use a voting algorithm to determine which sensor is active and which change to passive. The next sensor voted active on the subnet takes over communicating with the McAfee epo server. You can use the epolicy Orchestrator Sever Settings to configure multiple active sensors on a subnet. These missing sensors could be on a system that has been turned off or removed from the network. By Sjoan Started December 18, By Saviour Started December 23, Share More sharing options Followers 1.
Start new topic. Recommended Posts. TomTomTom 2 Posted May 13, Posted May 13, Hi there, I have several entries in my list of unknown computers, but a lot of them are replaced by new one now. Thanks TomTomTom. Link to comment Share on other sites More sharing options ESET Staff. Gonzalo Alvarez 66 Posted May 14, Posted May 14, What is rssensor exe? Any program that is executable has the.
Find out if rssensor. Any process has four stages of the lifecycle including start, ready, running, waiting, terminated or exit. Should You Remove rssensor exe? Fix rssensor. There are many reasons why you are seeing rssensor. You can use this task to remove the sensor, similar to the way you use the default Deployment task to remove anti-virus or security products such as VirusScan Enterprise from a client computer. You can use the ePolicy Orchestrator Deployment client task in the console to remove a sensor from a particular computer, if the sensor was deployed via ePolicy Orchestrator.
To use the deployment task from the ePolicy Orchestrator console to remove a sensor: 1. In the ePO Directory, select the computer fromw hich you want to remove the sensor. In the upper details pane of the console, click the Tasks tab and double-click the Rogue System Sensor Deployment task. Red Flag This Post Please let us know here why this post is inappropriate.
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