How to check ARP cheat in Lan.

[不坏阿峰]

 Maybe arp cheat i called is correct, i think you can understand. thx

 i found some software that used in the company for Lan monitor,first it can sniffer,and second it can control to stop some computer outing to internet . i find some details and guess it may be use arp cheat to prevent the computer outing to internet.  is it right?

 whether is there a software to check the arp cheating in the Lan.  thx



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其实阿峰不坏