Test run at: 2021-12-27 05:14:51 GMT
Client Prefix (v4): 110.44.127.x/24
Client AS (v4): 45650 (VIANET-NP)
IPv4 Probes: 63
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 rewritten Routable received Largest spoofable neighbor prefix length /8
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 (110.44.127.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) Prefix
ASN of spoofed
Received 110.44.127.x/24 /31 45650 yes 110.44.127.x/24 /30 45650 natblock 110.44.127.x/24 /29 45650 yes 110.44.127.x/24 /28 45650 yes 110.44.127.x/24 /27 45650 yes 110.44.127.x/24 /26 45650 yes 110.44.127.x/24 /25 45650 yes 110.44.127.x/24 /24 45650 yes 110.44.126.x/24 /23 45650 yes 110.44.125.x/24 /22 45650 yes 110.44.123.x/24 /21 45650 yes 110.44.119.x/24 /20 45650 yes 110.44.111.x/24 /19 UNROUTED yes 110.44.95.x/24 /18 9351 yes 110.44.63.x/24 /17 17878 yes 110.44.255.x/24 /16 9845 yes 110.45.127.x/24 /15 10066 yes 110.46.127.x/24 /14 9845 yes 110.40.127.x/24 /13 UNROUTED yes 110.36.127.x/24 /12 38264 yes 110.60.127.x/24 /11 9394 yes 110.12.127.x/24 /10 9318 yes 110.108.127.x/24 /9 9394 yes 110.172.127.x/24 /8 45996 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) 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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