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Avoid false 'ARP Spoofing' detection

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maride 2019-11-28 18:22:19 +01:00
parent 37afbb58a9
commit fcbcdaf9ac
1 changed files with 5 additions and 0 deletions
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5
ethernet/arp/arp.go
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@ -105,6 +105,11 @@ func getStatOrCreate(macaddr string) *arpStats {
// Adds a new entry to the devices array, checking if there may be a collision (=ARP Spoofing) // Adds a new entry to the devices array, checking if there may be a collision (=ARP Spoofing)
func addDeviceEntry(macaddr string, ipaddr string) { func addDeviceEntry(macaddr string, ipaddr string) {
if ipaddr == "0.0.0.0" {
// Possible ARP request if sender doesn't have an IP address yet. Ignore.
return
}
for i := 0; i < len(devices); i++ { for i := 0; i < len(devices); i++ {
// check if we found a collision (possible ARP spoofing) // check if we found a collision (possible ARP spoofing)
if (devices[i].macaddr == macaddr) != (devices[i].ipaddr == ipaddr) { if (devices[i].macaddr == macaddr) != (devices[i].ipaddr == ipaddr) {