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 (91.108.43.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
91.108.43.x/24
/31
203703
yes
91.108.43.x/24
/30
203703
yes
91.108.43.x/24
/29
203703
yes
91.108.43.x/24
/28
203703
yes
91.108.43.x/24
/27
203703
yes
91.108.43.x/24
/26
203703
yes
91.108.43.x/24
/25
203703
yes
91.108.43.x/24
/24
203703
yes
91.108.42.x/24
/23
202432
yes
91.108.41.x/24
/22
57246
yes
91.108.47.x/24
/21
43106
yes
91.108.35.x/24
/20
47133
yes
91.108.59.x/24
/19
62041
yes
91.108.11.x/24
/18
62041
yes
91.108.107.x/24
/17
201596
yes
91.108.171.x/24
/16
45021
yes
91.109.43.x/24
/15
59402
yes
91.110.43.x/24
/14
12576
yes
91.104.43.x/24
/13
8448
yes
91.100.43.x/24
/12
15516
yes
91.124.43.x/24
/11
6849
yes
91.76.43.x/24
/10
8359
yes
91.44.43.x/24
/9
3320
yes
91.236.43.x/24
/8
57904
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.
