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 AS Route:
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 (91.226.36.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
91.226.36.x/24
/31
197564
sendto
91.226.36.x/24
/30
197564
sendto
91.226.36.x/24
/29
197564
sendto
91.226.36.x/24
/28
197564
sendto
91.226.36.x/24
/27
197564
sendto
91.226.36.x/24
/26
197564
sendto
91.226.36.x/24
/25
197564
sendto
91.226.36.x/24
/24
197564
sendto
91.226.37.x/24
/23
197564
sendto
91.226.38.x/24
/22
31242
sendto
91.226.32.x/24
/21
56617
sendto
91.226.44.x/24
/20
48964
sendto
91.226.52.x/24
/19
34744
sendto
91.226.4.x/24
/18
50662
sendto
91.226.100.x/24
/17
197839
sendto
91.226.164.x/24
/16
44678
sendto
91.227.36.x/24
/15
15694
sendto
91.224.36.x/24
/14
42595
sendto
91.230.36.x/24
/13
29205
sendto
91.234.36.x/24
/12
61190
sendto
91.242.36.x/24
/11
56864
sendto
91.194.36.x/24
/10
3292
sendto
91.162.36.x/24
/9
12322
sendto
91.98.36.x/24
/8
16322
sendto
Meaning of status in Received column:
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.
