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 (151.217.193.x/24) can spoof 65535 neighboring addresses (within your /16 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
151.217.193.x/24
/31
13020
sendto
151.217.193.x/24
/30
13020
sendto
151.217.193.x/24
/29
13020
sendto
151.217.193.x/24
/28
13020
yes
151.217.193.x/24
/27
13020
sendto
151.217.193.x/24
/26
13020
sendto
151.217.193.x/24
/25
13020
sendto
151.217.193.x/24
/24
13020
sendto
151.217.192.x/24
/23
13020
sendto
151.217.195.x/24
/22
13020
yes
151.217.197.x/24
/21
13020
yes
151.217.201.x/24
/20
13020
sendto
151.217.209.x/24
/19
13020
sendto
151.217.225.x/24
/18
13020
sendto
151.217.129.x/24
/17
13020
sendto
151.217.65.x/24
/16
13020
yes
151.216.193.x/24
/15
UNROUTED
sendto
151.219.193.x/24
/14
UNROUTED
sendto
151.221.193.x/24
/13
UNROUTED
sendto
151.209.193.x/24
/12
11552
sendto
151.201.193.x/24
/11
701
sendto
151.249.193.x/24
/10
42036
sendto
151.153.193.x/24
/9
UNROUTED
no
151.89.193.x/24
/8
48135
sendto
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)
sendto
The spoofer client was unable to send spoofed headers due to an operating system restriction.
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 probes:
Spoofed source address
Destination
Received
2001:48d0:101:501::159
2001:40b0:7500:280::5458:517a
no
2001:4978:1fb:6400::d2
2001:40b0:7500:280::5458:517a
no
2001:49aa:111:aa00::11
2001:40b0:7500:280::5458:517a
no
fd11:1111:1111::1111
2001:40b0:7500:280::5458:517a
no
2001:48d0:101:501::159
2001:610:510:115:192:42:115:98
no
2001:4978:1fb:6400::d2
2001:610:510:115:192:42:115:98
no
2001:49aa:111:aa00::11
2001:610:510:115:192:42:115:98
no
fd11:1111:1111::1111
2001:610:510:115:192:42:115:98
no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
2001:67c:20xx::/40
/120
13020
sendto
2001:67c:20xx::/40
/112
13020
sendto
2001:67c:20xx::/40
/104
13020
sendto
2001:67c:20xx::/40
/96
13020
sendto
2001:67c:20xx::/40
/88
13020
sendto
2001:67c:20xx::/40
/80
13020
sendto
2001:67c:20xx::/40
/72
13020
sendto
2001:67c:20xx::/40
/64
13020
sendto
2001:67c:20xx::/40
/56
13020
sendto
2001:67c:20xx::/40
/48
13020
sendto
2001:67c:20xx::/40
/40
UNROUTED
sendto
2001:67c:a0xx::/40
/32
UNROUTED
sendto
2001:6fc:20xx::/40
/24
UNROUTED
sendto
2001:867c:20xx::/40
/16
1221
sendto
Meaning of status in Received column:
sendto
The spoofer client was unable to send spoofed headers due to an operating system restriction.
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
