Geraner 0 Posted April 1, 2022 Share Posted April 1, 2022 Hello, I just updated ESET to the latest version 15.2.12.0 and since the reboot, I'm receiving Network alerts about ARP Cache Poisoning attacks been blocked. The source is my TV in the same network. Is this a false postive detection, bug in the latest version, or a real attack due to new added features and signatures? Anyone else having seen this? Link to comment Share on other sites More sharing options...
itman 1,659 Posted April 1, 2022 Share Posted April 1, 2022 Determine if the IP address assigned to the LG TV is a duplicate of any other device IP address within your local network. Link to comment Share on other sites More sharing options...
Geraner 0 Posted April 1, 2022 Author Share Posted April 1, 2022 No it's not. But could the reason be, that the devices has both a Wifi connection and a cable connected to the network, this means the same device has 2 IP's but also 2 different MAC addresses, but that this is causing the above? I have both connected because the Wifi is not so stable, so I started having the TV cable connected as well. Link to comment Share on other sites More sharing options...
Administrators Marcos 5,071 Posted April 1, 2022 Administrators Share Posted April 1, 2022 39 minutes ago, Geraner said: No it's not. But could the reason be, that the devices has both a Wifi connection and a cable connected to the network, this means the same device has 2 IP's but also 2 different MAC addresses, but that this is causing the above? Yes, that should be it. There should be no difference in ARP cache poisoning detection between v15.1 and older versions. Link to comment Share on other sites More sharing options...
itman 1,659 Posted April 1, 2022 Share Posted April 1, 2022 39 minutes ago, Geraner said: this means the same device has 2 IP's but also 2 different MAC addresses A physical device can only have one MAC address associated with it. You must be performing some type of MAC address spoofing activities which is what Eset ARP poisoning processing is detecting. Link to comment Share on other sites More sharing options...
itman 1,659 Posted April 1, 2022 Share Posted April 1, 2022 Refer to this: https://support.eset.com/en/kb2933-arp-icmp-or-dns-cache-poisoning-attack-in-eset-home-products-for-windows . You will probably have to exclude both IP addresses from Eset IDS processing. Link to comment Share on other sites More sharing options...
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