Test run at: 2020-08-25 17:37:58 GMT
Client Prefix (v4): 37.48.80.x/24
Client AS (v4): 60781 (LEASEWEB-NL-AMS-01)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 unknown Routable unknown Largest spoofable neighbor prefix length none
Spoof status key received Spoofed packet was received. ✔ Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it. rewritten Spoofed packet was received, but the source address was changed en route. blocked Spoofed packet was not received, but unspoofed packet was. unknown Neither spoofed nor unspoofed packet was received.
Warnings:
IPv4 Adjacent Netblock Testing:
Your host (37.48.80.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 37.48.80.x/24 /31 60781 natblock 37.48.80.x/24 /30 60781 natblock 37.48.80.x/24 /29 60781 natblock 37.48.80.x/24 /28 60781 natblock 37.48.80.x/24 /27 60781 natblock 37.48.80.x/24 /26 60781 natblock 37.48.80.x/24 /25 60781 natblock 37.48.80.x/24 /24 60781 natblock 37.48.81.x/24 /23 60781 natblock 37.48.82.x/24 /22 60781 natblock 37.48.84.x/24 /21 60781 natblock 37.48.88.x/24 /20 60781 natblock 37.48.64.x/24 /19 60781 natblock 37.48.112.x/24 /18 60781 natblock 37.48.16.x/24 /17 13036 natblock 37.48.208.x/24 /16 29256 natblock 37.49.80.x/24 /15 6830 natblock 37.50.80.x/24 /14 3320 natblock 37.52.80.x/24 /13 6849 natblock 37.56.80.x/24 /12 25019 natblock 37.32.80.x/24 /11 12874 natblock 37.16.80.x/24 /10 31261 natblock 37.112.80.x/24 /9 49048 natblock 37.176.80.x/24 /8 30722 natblock Meaning of status in Received column:
natblock Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
IPv4 Outbound Filtering Depth:
The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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