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 was unable to source even non-spoofed IPv6 UDP traffic to our servers. A firewall, router or other middlebox is preventing our testing. To test your provider's network further, you must remove the firewall or router and connect directly.
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 (192.87.161.x/24) can spoof 511 neighboring addresses (within your /23 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
192.87.161.x/24
/31
1103
yes
192.87.161.x/24
/30
1103
yes
192.87.161.x/24
/29
1103
yes
192.87.161.x/24
/28
1103
yes
192.87.161.x/24
/27
1103
yes
192.87.161.x/24
/26
1103
yes
192.87.161.x/24
/25
1103
yes
192.87.161.x/24
/24
1103
yes
192.87.160.x/24
/23
1103
yes
192.87.163.x/24
/22
1103
no
192.87.165.x/24
/21
1103
no
192.87.169.x/24
/20
1103
no
192.87.177.x/24
/19
1103
no
192.87.129.x/24
/18
1103
no
192.87.225.x/24
/17
1103
no
192.87.33.x/24
/16
1103
no
192.86.161.x/24
/15
393773
no
192.85.161.x/24
/14
UNROUTED
no
192.83.161.x/24
/13
UNROUTED
no
192.95.161.x/24
/12
22995
no
192.71.161.x/24
/11
UNROUTED
no
192.119.161.x/24
/10
54500
no
192.23.161.x/24
/9
72
no
192.215.161.x/24
/8
4266
no
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)
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).
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
2001:610:5xx::/40
/120
1103
sendto
2001:610:5xx::/40
/112
1103
sendto
2001:610:5xx::/40
/104
1103
sendto
2001:610:5xx::/40
/96
1103
sendto
2001:610:5xx::/40
/88
1103
sendto
2001:610:5xx::/40
/80
1103
sendto
2001:610:5xx::/40
/72
1103
sendto
2001:610:5xx::/40
/64
1103
sendto
2001:610:5xx::/40
/56
1103
sendto
2001:610:5xx::/40
/48
1103
sendto
2001:610:5xx::/40
/40
1103
sendto
2001:610:85xx::/40
/32
1103
sendto
2001:690:5xx::/40
/24
1930
sendto
2001:8610:5xx::/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.
