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 (195.251.29.x/24) can spoof 127 neighboring addresses (within your /25 prefix)
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
195.251.29.x/24
/31
5408
yes
195.251.29.x/24
/30
5408
yes
195.251.29.x/24
/29
5408
yes
195.251.29.x/24
/28
5408
yes
195.251.29.x/24
/27
5408
yes
195.251.29.x/24
/26
5408
yes
195.251.29.x/24
/25
5408
yes
195.251.29.x/24
/24
5408
no
195.251.28.x/24
/23
5408
no
195.251.31.x/24
/22
5408
no
195.251.25.x/24
/21
5408
no
195.251.21.x/24
/20
5408
no
195.251.13.x/24
/19
5408
no
195.251.61.x/24
/18
5408
no
195.251.93.x/24
/17
5408
no
195.251.157.x/24
/16
5408
no
195.250.29.x/24
/15
57276
no
195.249.29.x/24
/14
3292
no
195.255.29.x/24
/13
719
no
195.243.29.x/24
/12
3320
no
195.235.29.x/24
/11
202997
no
195.219.29.x/24
/10
6453
no
195.187.29.x/24
/9
8308
no
195.123.29.x/24
/8
UNROUTED
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
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 probes:
Spoofed source address
Destination
Received
2001:48d0:101:501:ec4:7aff:fea8:71a8
2001:48d0:101:501::242
no
2001:4978:1fb:6400::d2
2001:48d0:101:501::242
no
2001:49aa:111:aa00::11
2001:48d0:101:501::242
no
fd11:1111:1111::1111
2001:48d0:101:501::242
no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)
Prefix Length
ASN of spoofed source address
Received
2001:648:23xx::/40
/120
5408
yes
2001:648:23xx::/40
/112
5408
yes
2001:648:23xx::/40
/104
5408
yes
2001:648:23xx::/40
/96
5408
yes
2001:648:23xx::/40
/88
5408
yes
2001:648:23xx::/40
/80
5408
yes
2001:648:23xx::/40
/72
5408
yes
2001:648:23xx::/40
/64
5408
yes
2001:648:23xx::/40
/56
5408
no
2001:648:23xx::/40
/48
5408
no
2001:648:23xx::/40
/40
5408
no
2001:648:a3xx::/40
/32
5408
no
2001:6c8:23xx::/40
/24
3292
no
2001:8648:23xx::/40
/16
1221
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)
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
