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 (92.242.45.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
92.242.45.x/24
/31
210200
yes
92.242.45.x/24
/30
210200
yes
92.242.45.x/24
/29
210200
yes
92.242.45.x/24
/28
210200
yes
92.242.45.x/24
/27
210200
yes
92.242.45.x/24
/26
210200
yes
92.242.45.x/24
/25
210200
yes
92.242.45.x/24
/24
210200
yes
92.242.44.x/24
/23
210200
natblock
92.242.47.x/24
/22
49063
natblock
92.242.41.x/24
/21
49063
natblock
92.242.37.x/24
/20
49063
natblock
92.242.61.x/24
/19
24936
natblock
92.242.13.x/24
/18
12668
natblock
92.242.109.x/24
/17
3261
natblock
92.242.173.x/24
/16
12874
natblock
92.243.45.x/24
/15
44385
natblock
92.240.45.x/24
/14
20875
natblock
92.246.45.x/24
/13
47136
natblock
92.250.45.x/24
/12
42863
natblock
92.226.45.x/24
/11
6805
natblock
92.210.45.x/24
/10
3209
natblock
92.178.45.x/24
/9
12479
natblock
92.114.45.x/24
/8
51737
natblock
Meaning of status in Received column:
yes
Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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
able to spoof routable, non-adjacent source addresses through the
first 1 IP hop(s).
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
