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Session Report

Summary:
Test run at: 2022-02-22 15:42:31 GMT
Client Prefix (v4): 131.0.60.x/24
Client AS (v4): 61704
IPv4 Probes: 60
Client Prefix (v6): 2804:214:82xx::/40
Client AS (v6): 26615
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable receivedblocked
Largest spoofable neighbor prefix length /8/64

Meaning of result status in column:

receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.

Warnings:

IPv4 Adjacent Netblock Testing:

Your host (131.0.60.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
131.0.60.x/24/3161704natblock
131.0.60.x/24/3061704natblock
131.0.60.x/24/2961704yes
131.0.60.x/24/2861704yes
131.0.60.x/24/2761704yes
131.0.60.x/24/2661704yes
131.0.60.x/24/2561704yes
131.0.60.x/24/2461704yes
131.0.61.x/24/2361704yes
131.0.62.x/24/2261704yes
131.0.56.x/24/2161874yes
131.0.52.x/24/203549yes
131.0.44.x/24/19262621yes
131.0.28.x/24/1828210yes
131.0.124.x/24/17271133yes
131.0.188.x/24/1661708yes
131.1.60.x/24/153269yes
131.2.60.x/24/14749yes
131.4.60.x/24/13721yes
131.8.60.x/24/12749yes
131.16.60.x/24/11721yes
131.32.60.x/24/10385yes
131.64.60.x/24/927064yes
131.128.60.x/24/814348yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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.
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
IPv6 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:48d0:101:501::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:214:82xx::/40/12026615yes
2804:214:82xx::/40/11226615yes
2804:214:82xx::/40/10426615yes
2804:214:82xx::/40/9626615yes
2804:214:82xx::/40/8826615yes
2804:214:82xx::/40/8026615yes
2804:214:82xx::/40/7226615yes
2804:214:82xx::/40/6426615yes
2804:214:82xx::/40/5626615no
2804:214:82xx::/40/4826615no
2804:214:82xx::/40/4026615no
2804:214:2xx::/40/3226615no
2804:294:82xx::/40/2428604no
2804:8214:82xx::/40/16272497no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets 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.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
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