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Session Report

Summary:
Test run at: 2022-05-06 12:52:36 GMT
Client Prefix (v4): 191.5.217.x/24
Client AS (v4): 262459
IPv4 Probes: 60
Client Prefix (v6): 2804:4b0:2xx::/40
Client AS (v6): 262459
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 /8/32
Spoof status key
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.
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 (191.5.217.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
191.5.217.x/24/31262459no
191.5.217.x/24/30262459no
191.5.217.x/24/29262459yes
191.5.217.x/24/28262459yes
191.5.217.x/24/27262459yes
191.5.217.x/24/26262459yes
191.5.217.x/24/25262459yes
191.5.217.x/24/24262459yes
191.5.216.x/24/23262459yes
191.5.219.x/24/22262459yes
191.5.221.x/24/2153218yes
191.5.209.x/24/20262832yes
191.5.201.x/24/19262468yes
191.5.249.x/24/18263544yes
191.5.153.x/24/1753085yes
191.5.89.x/24/1628201yes
191.4.217.x/24/1519611yes
191.7.217.x/24/14263327yes
191.1.217.x/24/137738yes
191.13.217.x/24/1227699yes
191.21.217.x/24/1126599yes
191.37.217.x/24/10263373yes
191.69.217.x/24/926611yes
191.133.217.x/24/826615yes

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
yesPackets 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 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.

  

  
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
2804:4b0:2xx::/40/120262459yes
2804:4b0:2xx::/40/112262459yes
2804:4b0:2xx::/40/104262459yes
2804:4b0:2xx::/40/96262459yes
2804:4b0:2xx::/40/88262459yes
2804:4b0:2xx::/40/80262459yes
2804:4b0:2xx::/40/72262459yes
2804:4b0:2xx::/40/64262459yes
2804:4b0:2xx::/40/56262459yes
2804:4b0:2xx::/40/48262459yes
2804:4b0:2xx::/40/40262459yes
2804:4b0:82xx::/40/32262459yes
2804:430:2xx::/40/24UNROUTEDno
2804:84b0:2xx::/40/16UNROUTEDno

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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