Test run at: 2022-07-15 09:31:05 GMT
Client Prefix (v4): 41.191.101.x/24
Client AS (v4): 37089 (ALINK-CM-AS)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 unknown Routable received Largest spoofable neighbor prefix length /31
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.
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.
IPv4 Adjacent Netblock Testing:
Your host (41.191.101.x/24) can spoof 1 neighboring addresses (within your /31 prefix)
Spoofed source address (anon) Prefix
ASN of spoofed
Received 41.191.101.x/24 /31 37089 yes 41.191.101.x/24 /30 37089 sendto 41.191.101.x/24 /29 37089 sendto 41.191.101.x/24 /28 37089 sendto 41.191.101.x/24 /27 37089 sendto 41.191.101.x/24 /26 37089 sendto 41.191.101.x/24 /25 37089 sendto 41.191.101.x/24 /24 37089 sendto 41.191.100.x/24 /23 UNROUTED sendto 41.191.103.x/24 /22 37089 sendto 41.191.97.x/24 /21 37087 sendto 41.191.109.x/24 /20 36974 sendto 41.191.117.x/24 /19 37185 sendto 41.191.69.x/24 /18 37190 sendto 41.191.37.x/24 /17 36974 sendto 41.191.229.x/24 /16 30844 sendto 41.190.101.x/24 /15 36999 sendto 41.189.101.x/24 /14 36974 sendto 41.187.101.x/24 /13 20928 sendto 41.183.101.x/24 /12 37028 sendto 41.175.101.x/24 /11 30969 sendto 41.159.101.x/24 /10 16058 sendto 41.255.101.x/24 /9 21003 sendto 41.63.101.x/24 /8 37277 sendto
Meaning of status in Received column:
yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) sendto The spoofer client was unable to send spoofed headers due to an operating system restriction.
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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