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 (177.52.57.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
177.52.57.x/24
/31
262908
natblock
177.52.57.x/24
/30
262908
natblock
177.52.57.x/24
/29
262908
natblock
177.52.57.x/24
/28
262908
natblock
177.52.57.x/24
/27
262908
natblock
177.52.57.x/24
/26
262908
natblock
177.52.57.x/24
/25
262908
natblock
177.52.57.x/24
/24
262908
natblock
177.52.56.x/24
/23
262908
natblock
177.52.59.x/24
/22
262908
natblock
177.52.61.x/24
/21
262824
natblock
177.52.49.x/24
/20
28198
natblock
177.52.41.x/24
/19
262437
natblock
177.52.25.x/24
/18
262282
natblock
177.52.121.x/24
/17
52802
natblock
177.52.185.x/24
/16
262451
natblock
177.53.57.x/24
/15
52809
natblock
177.54.57.x/24
/14
28292
natblock
177.48.57.x/24
/13
26615
natblock
177.60.57.x/24
/12
26599
natblock
177.36.57.x/24
/11
262909
natblock
177.20.57.x/24
/10
53239
natblock
177.116.57.x/24
/9
26599
natblock
177.180.57.x/24
/8
28573
natblock
Meaning of status in Received column:
natblock
Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
IPv4 Outbound Filtering Depth:
The tracefilter test found your host
unable to spoof routable, non-adjacent source addresses through
even the first IP hop.
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
2607:8400:2880:4::80df:9d0d
no
2001:4978:1fb:6400::d2
2607:8400:2880:4::80df:9d0d
no
2001:49aa:111:aa00::11
2607:8400:2880:4::80df:9d0d
no
fd11:1111:1111::1111
2607:8400:2880:4::80df:9d0d
no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
2804:3c8:exx::/40
/120
262908
no
2804:3c8:exx::/40
/112
262908
no
2804:3c8:exx::/40
/104
262908
no
2804:3c8:exx::/40
/96
262908
no
2804:3c8:exx::/40
/88
262908
no
2804:3c8:exx::/40
/80
262908
no
2804:3c8:exx::/40
/72
262908
no
2804:3c8:exx::/40
/64
262908
no
2804:3c8:exx::/40
/56
262908
no
2804:3c8:exx::/40
/48
262908
no
2804:3c8:exx::/40
/40
262908
no
2804:3c8:8exx::/40
/32
262908
no
2804:348:exx::/40
/24
28133
no
2804:83c8:exx::/40
/16
272219
no
Meaning of status in Received column:
no
Packets spoofed from adjacent netblock were not received, probably due to blocking
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.