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 (103.121.6.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
103.121.6.x/24
/31
150683
yes
103.121.6.x/24
/30
150683
yes
103.121.6.x/24
/29
150683
yes
103.121.6.x/24
/28
150683
yes
103.121.6.x/24
/27
150683
yes
103.121.6.x/24
/26
150683
yes
103.121.6.x/24
/25
150683
yes
103.121.6.x/24
/24
150683
yes
103.121.7.x/24
/23
150683
yes
103.121.4.x/24
/22
132296
yes
103.121.2.x/24
/21
137668
yes
103.121.14.x/24
/20
134595
yes
103.121.22.x/24
/19
63859
yes
103.121.38.x/24
/18
134599
yes
103.121.70.x/24
/17
133257
yes
103.121.134.x/24
/16
135478
yes
103.120.6.x/24
/15
138014
yes
103.123.6.x/24
/14
UNROUTED
yes
103.125.6.x/24
/13
17995
yes
103.113.6.x/24
/12
59074
yes
103.105.6.x/24
/11
UNROUTED
yes
103.89.6.x/24
/10
133800
yes
103.57.6.x/24
/9
9370
yes
103.249.6.x/24
/8
23860
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.
