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 (209.131.62.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
209.131.62.x/24
/31
7233
yes
209.131.62.x/24
/30
7233
yes
209.131.62.x/24
/29
7233
yes
209.131.62.x/24
/28
7233
yes
209.131.62.x/24
/27
7233
yes
209.131.62.x/24
/26
7233
yes
209.131.62.x/24
/25
7233
yes
209.131.62.x/24
/24
7233
yes
209.131.63.x/24
/23
10310
yes
209.131.60.x/24
/22
10310
yes
209.131.58.x/24
/21
10310
yes
209.131.54.x/24
/20
7233
yes
209.131.46.x/24
/19
UNROUTED
yes
209.131.30.x/24
/18
12129
yes
209.131.126.x/24
/17
UNROUTED
yes
209.131.190.x/24
/16
11224
yes
209.130.62.x/24
/15
UNROUTED
yes
209.129.62.x/24
/14
2152
yes
209.135.62.x/24
/13
11329
yes
209.139.62.x/24
/12
2914
yes
209.147.62.x/24
/11
2920
yes
209.163.62.x/24
/10
6983
yes
209.195.62.x/24
/9
6597
yes
209.3.62.x/24
/8
209
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
unable to spoof routable, non-adjacent source addresses through
even the first IP hop.
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 Adjacent Netblock Testing:
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
2001:4998:efxx::/40
/120
7233
yes
2001:4998:efxx::/40
/112
7233
yes
2001:4998:efxx::/40
/104
7233
yes
2001:4998:efxx::/40
/96
7233
yes
2001:4998:efxx::/40
/88
7233
yes
2001:4998:efxx::/40
/80
7233
yes
2001:4998:efxx::/40
/72
7233
yes
2001:4998:efxx::/40
/64
7233
yes
2001:4998:efxx::/40
/56
7233
yes
2001:4998:efxx::/40
/48
7233
yes
2001:4998:efxx::/40
/40
10310
yes
2001:4998:6fxx::/40
/32
10310
yes
2001:4918:efxx::/40
/24
7849
yes
2001:c998:efxx::/40
/16
UNROUTED
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)
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
