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.
Warnings:
⚠️ Your host is behind a Network Address Translation (NAT) router or firewall but spoofed packets are still being received without modification. See here for more information.
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 (102.68.162.x/24) can spoof 8388607 neighboring addresses (within your /9 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
102.68.162.x/24
/31
328487
yes
102.68.162.x/24
/30
328487
yes
102.68.162.x/24
/29
328487
yes
102.68.162.x/24
/28
328487
yes
102.68.162.x/24
/27
328487
yes
102.68.162.x/24
/26
328487
yes
102.68.162.x/24
/25
328487
yes
102.68.162.x/24
/24
328487
yes
102.68.163.x/24
/23
328487
yes
102.68.160.x/24
/22
328487
rewritten
102.68.166.x/24
/21
328487
yes
102.68.170.x/24
/20
328875
yes
102.68.178.x/24
/19
328253
yes
102.68.130.x/24
/18
37284
yes
102.68.226.x/24
/17
37037
yes
102.68.34.x/24
/16
UNROUTED
natblock
102.69.162.x/24
/15
328488
yes
102.70.162.x/24
/14
37294
yes
102.64.162.x/24
/13
36924
yes
102.76.162.x/24
/12
6713
yes
102.84.162.x/24
/11
37075
yes
102.100.162.x/24
/10
36925
yes
102.4.162.x/24
/9
36926
yes
102.196.162.x/24
/8
UNROUTED
natblock
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)
natblock
Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
rewritten
The source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.
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).
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
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
2c0f:ef18:xx::/40
/120
328266
natblock
2c0f:ef18:xx::/40
/112
328266
natblock
2c0f:ef18:xx::/40
/104
328266
natblock
2c0f:ef18:xx::/40
/96
328266
natblock
2c0f:ef18:xx::/40
/88
328266
natblock
2c0f:ef18:xx::/40
/80
328266
natblock
2c0f:ef18:xx::/40
/72
328266
natblock
2c0f:ef18:xx::/40
/64
328266
natblock
2c0f:ef18:xx::/40
/56
328266
natblock
2c0f:ef18:xx::/40
/48
328266
natblock
2c0f:ef18:xx::/40
/40
328266
natblock
2c0f:ef18:80xx::/40
/32
328266
natblock
2c0f:ef98:xx::/40
/24
328359
natblock
2c0f:6f18:xx::/40
/16
UNROUTED
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.
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
