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 (83.229.61.x/24) can spoof 31 neighboring addresses (within your /27 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
83.229.61.x/24
/31
25198
yes
83.229.61.x/24
/30
25198
yes
83.229.61.x/24
/29
25198
yes
83.229.61.x/24
/28
25198
yes
83.229.61.x/24
/27
25198
yes
83.229.61.x/24
/26
25198
no
83.229.61.x/24
/25
25198
no
83.229.61.x/24
/24
25198
no
83.229.60.x/24
/23
207990
no
83.229.63.x/24
/22
39159
no
83.229.57.x/24
/21
198492
no
83.229.53.x/24
/20
25228
no
83.229.45.x/24
/19
UNROUTED
no
83.229.29.x/24
/18
212238
no
83.229.125.x/24
/17
UNROUTED
no
83.229.189.x/24
/16
6854
no
83.228.61.x/24
/15
205132
no
83.231.61.x/24
/14
12479
no
83.225.61.x/24
/13
30722
no
83.237.61.x/24
/12
8359
no
83.245.61.x/24
/11
3257
no
83.197.61.x/24
/10
3215
no
83.165.61.x/24
/9
12334
no
83.101.61.x/24
/8
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)
IPv4 Outbound Filtering Depth:
The tracefilter test found your host
unable to spoof routable, non-adjacent source addresses through
even the first IP hop.
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.