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 (176.126.240.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
176.126.240.x/24
/31
44684
yes
176.126.240.x/24
/30
44684
yes
176.126.240.x/24
/29
44684
yes
176.126.240.x/24
/28
44684
yes
176.126.240.x/24
/27
44684
yes
176.126.240.x/24
/26
44684
yes
176.126.240.x/24
/25
44684
yes
176.126.240.x/24
/24
44684
yes
176.126.241.x/24
/23
44684
yes
176.126.242.x/24
/22
44684
yes
176.126.244.x/24
/21
44684
yes
176.126.248.x/24
/20
47544
no
176.126.224.x/24
/19
199335
no
176.126.208.x/24
/18
2614
no
176.126.176.x/24
/17
6910
no
176.126.112.x/24
/16
UNROUTED
no
176.127.240.x/24
/15
3303
no
176.124.240.x/24
/14
205363
no
176.122.240.x/24
/13
209921
no
176.118.240.x/24
/12
200833
no
176.110.240.x/24
/11
31028
no
176.94.240.x/24
/10
3209
no
176.62.240.x/24
/9
43530
no
176.254.240.x/24
/8
5607
no
Meaning of status in Received column:
no
Packets spoofed from adjacent netblock were not received, probably due to blocking
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 1 IP hop(s).
IPv6 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.
IPv6 probes:
Spoofed source address
Destination
Received
2001:48d0:101:501::159
2001:48d0:101:501::242
no
2001:4978:1fb:6400::d2
2001:48d0:101:501::242
no
2001:49aa:111:aa00::11
2001:48d0:101:501::242
no
fd11:1111:1111::1111
2001:48d0:101:501::242
no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
2a00:1098:xx::/40
/120
44684
yes
2a00:1098:xx::/40
/112
44684
yes
2a00:1098:xx::/40
/104
44684
yes
2a00:1098:xx::/40
/96
44684
yes
2a00:1098:xx::/40
/88
44684
yes
2a00:1098:xx::/40
/80
44684
yes
2a00:1098:xx::/40
/72
44684
yes
2a00:1098:xx::/40
/64
44684
yes
2a00:1098:xx::/40
/56
44684
yes
2a00:1098:xx::/40
/48
44684
yes
2a00:1098:xx::/40
/40
44684
yes
2a00:1098:80xx::/40
/32
44684
yes
2a00:1018:xx::/40
/24
25394
no
2a00:9098:xx::/40
/16
UNROUTED
no
Meaning of status in Received column:
no
Packets spoofed from adjacent netblock were not received, probably due to blocking
yes
Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.