Test run at: 2019-04-01 21:06:17 GMT
Client Prefix (v4): 195.8.192.x/24
Client AS (v4): 42004 (ULGRP-AS)
IPv4 Probes: 116
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 (195.8.192.x/24) can spoof 1 neighboring addresses (within your /31 prefix)
Spoofed source address (anon) Prefix
ASN of spoofed
Received 195.8.192.x/24 /31 42004 yes 195.8.192.x/24 /30 42004 sendto 195.8.192.x/24 /29 42004 sendto 195.8.192.x/24 /28 42004 sendto 195.8.192.x/24 /27 42004 sendto 195.8.192.x/24 /26 42004 sendto 195.8.192.x/24 /25 42004 sendto 195.8.192.x/24 /24 42004 sendto 195.8.193.x/24 /23 42004 sendto 195.8.194.x/24 /22 UNROUTED sendto 195.8.196.x/24 /21 9009 sendto 195.8.200.x/24 /20 39169 sendto 195.8.208.x/24 /19 31477 sendto 195.8.224.x/24 /18 8820 sendto 195.8.128.x/24 /17 15443 sendto 195.8.64.x/24 /16 8426 sendto 195.9.192.x/24 /15 25513 sendto 195.10.192.x/24 /14 20521 sendto 195.12.192.x/24 /13 8547 sendto 195.0.192.x/24 /12 2116 sendto 195.24.192.x/24 /11 15964 sendto 195.40.192.x/24 /10 4589 sendto 195.72.192.x/24 /9 8224 sendto 195.136.192.x/24 /8 20804 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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