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ARP: ARP Spoofing Detected

Hi:

I´m seeing a lot of events from "ARP: ARP Spoofing Detected". About 15,000 per month.

 

I downloaded tha packet capture to see the traffic related to this attacks. I only seen a normal ARP Request/ARP in my network. 

I read in the forum "ARP Mac Address Flip Flop" that someone solve one similar issue using the command arp delet <ip address>, and I whant know, How can I refresh all my arp table ?or if I can delete all my table with one comand and if it not afected my device.

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Tsri
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Re: ARP: ARP Spoofing Detected

 

 

 Sensor remembers ARP and Reverse ARP (RARP) requests (for a specific time period), and matches an ARP reply with an ARP request message. Due to this ability, it can detect the following attacks:
  • ARP Spoofing Detected: If an ARP reply message is seen without a prior ARP request.
  • ARP Spoofing, Duplicate MAC: Detection of multiple ARP reply packets, with different sender MAC addresses for the same IP address that is being resolved.
  • MAC Address Cloned: Multiple and different replies to an RARP request; the exact opposite of 2.
The Sensor can also detect anomalous ARP reply packets, with a broadcast destination MAC address, and request or reply packets, with a broadcast sender addresses.
 
Refer KB55910 for more details
 
 
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