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 (185.18.244.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
185.18.244.x/24
/31
39232
yes
185.18.244.x/24
/30
39232
yes
185.18.244.x/24
/29
39232
yes
185.18.244.x/24
/28
39232
yes
185.18.244.x/24
/27
39232
yes
185.18.244.x/24
/26
39232
yes
185.18.244.x/24
/25
39232
yes
185.18.244.x/24
/24
39232
yes
185.18.245.x/24
/23
39232
yes
185.18.246.x/24
/22
39232
yes
185.18.240.x/24
/21
UNROUTED
natblock
185.18.252.x/24
/20
43994
natblock
185.18.228.x/24
/19
41313
natblock
185.18.212.x/24
/18
58081
natblock
185.18.180.x/24
/17
199372
natblock
185.18.116.x/24
/16
31430
natblock
185.19.244.x/24
/15
8343
natblock
185.16.244.x/24
/14
47764
natblock
185.22.244.x/24
/13
8445
natblock
185.26.244.x/24
/12
39905
natblock
185.2.244.x/24
/11
60185
natblock
185.50.244.x/24
/10
62022
natblock
185.82.244.x/24
/9
UNROUTED
natblock
185.146.244.x/24
/8
198401
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 3 IP hop(s).
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.