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ARP Cache Poisoning/Duplicate IP addresses on network


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getting this detection on all endpoints >>

Rule/worm name;Application;SHA1;User
10/15/2020 4:36:11 PM;ARP Cache Poisoning attack;Blocked;10.4.2.1 [00:09:0f:97:54:78];10.4.2.1 [00:16:6c:9a:0d:25];ARP;;;0000000000000000000000000000000000000000;

Time;Event;Action;Source;Target;Protocol;Rule/worm name;Application;SHA1;User
10/12/2020 11:58:26 AM;Duplicate IP addresses on network;Blocked;10.4.2.1 [00:09:0f:97:54:78];10.4.2.1 [00:16:6c:9a:0d:25];ARP;;;0000000000000000000000000000000000000000;
 

NOTE: the 10.4.2.1 is the IP Address of the router. Is this likely a false detection coming from the ESET IDS? Router has latest firmware. Is it possible the routers firmware has been compromised? 

 

 

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There are 2 devices with the same IP address in the network. A pcap log should show them as well. Please enable advanced network protection logging in the adv. setup -> tools -> diagnostics, reboot the machine and wait for the detection to trigger.

Then disable logging, collect logs with ESET Log Collector and upload the generated zip file here.

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