Test run at: 2020-07-22 22:11:14 GMT
Client Prefix (v4): 190.11.220.x/24
Client AS (v4): 270656
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 rewritten Routable ✔ rewritten Largest spoofable neighbor prefix length none
Meaning of result status in column:
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.
IPv4 Adjacent Netblock Testing:
Your host (190.11.220.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 190.11.220.x/24 /31 270656 rewritten 190.11.220.x/24 /30 270656 rewritten 190.11.220.x/24 /29 270656 rewritten 190.11.220.x/24 /28 270656 rewritten 190.11.220.x/24 /27 270656 rewritten 190.11.220.x/24 /26 270656 rewritten 190.11.220.x/24 /25 270656 rewritten 190.11.220.x/24 /24 270656 rewritten 190.11.221.x/24 /23 270656 rewritten 190.11.222.x/24 /22 270656 rewritten 190.11.216.x/24 /21 270654 rewritten 190.11.212.x/24 /20 270653 rewritten 190.11.204.x/24 /19 27953 rewritten 190.11.252.x/24 /18 27740 rewritten 190.11.156.x/24 /17 13585 rewritten 190.11.92.x/24 /16 27839 rewritten 190.10.220.x/24 /15 14522 rewritten 190.9.220.x/24 /14 13489 rewritten 190.15.220.x/24 /13 27879 rewritten 190.3.220.x/24 /12 27695 rewritten 190.27.220.x/24 /11 19429 rewritten 190.43.220.x/24 /10 6147 rewritten 190.75.220.x/24 /9 8048 rewritten 190.139.220.x/24 /8 7303 rewritten
Meaning of status in Received column:
rewritten The source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.
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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