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 (200.123.235.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
200.123.235.x/24
/31
270288
no
200.123.235.x/24
/30
270288
no
200.123.235.x/24
/29
270288
no
200.123.235.x/24
/28
270288
no
200.123.235.x/24
/27
270288
no
200.123.235.x/24
/26
270288
no
200.123.235.x/24
/25
270288
no
200.123.235.x/24
/24
270288
no
200.123.234.x/24
/23
270288
no
200.123.233.x/24
/22
270288
no
200.123.239.x/24
/21
270270
no
200.123.227.x/24
/20
270262
no
200.123.251.x/24
/19
52402
no
200.123.203.x/24
/18
6762
no
200.123.171.x/24
/17
16814
no
200.123.107.x/24
/16
11664
no
200.122.235.x/24
/15
13489
no
200.121.235.x/24
/14
6147
no
200.127.235.x/24
/13
10481
no
200.115.235.x/24
/12
27747
no
200.107.235.x/24
/11
27932
no
200.91.235.x/24
/10
18747
no
200.59.235.x/24
/9
27751
no
200.251.235.x/24
/8
4230
no
Meaning of status in Received column:
no
Packets spoofed from adjacent netblock were not received, probably due to blocking
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
2001:48d0:101:501::159
2001:48d0:101:501::247
no
2001:4978:1fb:6400::d2
2001:48d0:101:501::247
no
2001:49aa:111:aa00::11
2001:48d0:101:501::247
no
fd11:1111:1111::1111
2001:48d0:101:501::247
no
2001:48d0:101:501::159
2001:770:18:7:225:90ff:fe0c:acb4
no
2001:4978:1fb:6400::d2
2001:770:18:7:225:90ff:fe0c:acb4
no
2001:49aa:111:aa00::11
2001:770:18:7:225:90ff:fe0c:acb4
no
fd11:1111:1111::1111
2001:770:18:7:225:90ff:fe0c:acb4
no
2001:48d0:101:501::159
2001:df0:4:800:21c:c0ff:feb2:ad5f
no
2001:4978:1fb:6400::d2
2001:df0:4:800:21c:c0ff:feb2:ad5f
no
2001:49aa:111:aa00::11
2001:df0:4:800:21c:c0ff:feb2:ad5f
no
fd11:1111:1111::1111
2001:df0:4:800:21c:c0ff:feb2:ad5f
no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
2804:69bc:c0xx::/40
/120
270288
yes
2804:69bc:c0xx::/40
/112
270288
yes
2804:69bc:c0xx::/40
/104
270288
yes
2804:69bc:c0xx::/40
/96
270288
yes
2804:69bc:c0xx::/40
/88
270288
yes
2804:69bc:c0xx::/40
/80
270288
yes
2804:69bc:c0xx::/40
/72
270288
yes
2804:69bc:c0xx::/40
/64
270288
yes
2804:69bc:c0xx::/40
/56
270288
no
2804:69bc:c0xx::/40
/48
270288
no
2804:69bc:c0xx::/40
/40
270288
no
2804:69bc:40xx::/40
/32
UNROUTED
no
2804:693c:c0xx::/40
/24
270257
no
2804:e9bc:c0xx::/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.