Test run at: 2020-08-25 16:32:14 GMT
Client Prefix (v4): 37.235.49.x/24
Client AS (v4): 50613 (ThorDC-AS)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 blocked Routable received Largest spoofable neighbor prefix length /8
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 (37.235.49.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 37.235.49.x/24 /31 50613 yes 37.235.49.x/24 /30 50613 yes 37.235.49.x/24 /29 50613 yes 37.235.49.x/24 /28 50613 yes 37.235.49.x/24 /27 50613 yes 37.235.49.x/24 /26 50613 yes 37.235.49.x/24 /25 50613 yes 37.235.49.x/24 /24 50613 yes 37.235.48.x/24 /23 51290 yes 37.235.51.x/24 /22 57169 yes 37.235.53.x/24 /21 39020 yes 37.235.57.x/24 /20 57169 yes 37.235.33.x/24 /19 43160 yes 37.235.17.x/24 /18 5484 yes 37.235.113.x/24 /17 35332 yes 37.235.177.x/24 /16 41268 yes 37.234.49.x/24 /15 8448 yes 37.233.49.x/24 /14 31252 yes 37.239.49.x/24 /13 50710 yes 37.227.49.x/24 /12 24608 yes 37.251.49.x/24 /11 49562 yes 37.203.49.x/24 /10 51173 yes 37.171.49.x/24 /9 51207 yes 37.107.49.x/24 /8 25019 yes Meaning of status in Received column:
yes Packets spoofed from adjacent netblock were received yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
IPv4 Outbound Filtering Depth:
The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 10 IP hop(s).Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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