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Session Report

Summary:
Test run at: 2022-09-26 13:11:21 GMT
Client Prefix (v4): 141.10.85.x/24
Client AS (v4): 553 (BELWUE)
IPv4 Probes: 60
Client Prefix (v6): 2001:7c7:18xx::/40
Client AS (v6): 553 (BELWUE)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
Largest spoofable neighbor prefix length nonenone
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.

Warnings:

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 (141.10.85.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
141.10.85.x/24/31553sendto
141.10.85.x/24/30553sendto
141.10.85.x/24/29553sendto
141.10.85.x/24/28553sendto
141.10.85.x/24/27553sendto
141.10.85.x/24/26553sendto
141.10.85.x/24/25553sendto
141.10.85.x/24/24553sendto
141.10.84.x/24/23553sendto
141.10.87.x/24/22553sendto
141.10.81.x/24/21553sendto
141.10.93.x/24/20553sendto
141.10.69.x/24/19553sendto
141.10.117.x/24/18553sendto
141.10.21.x/24/17553sendto
141.10.213.x/24/16553sendto
141.11.85.x/24/1549999sendto
141.8.85.x/24/1412709sendto
141.14.85.x/24/13680sendto
141.2.85.x/24/1220633sendto
141.26.85.x/24/112857sendto
141.42.85.x/24/10680sendto
141.74.85.x/24/9680sendto
141.138.85.x/24/8198045sendto

Meaning of status in Received column:

sendtoThe 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 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
2001:7c7:18xx::/40/120553sendto
2001:7c7:18xx::/40/112553sendto
2001:7c7:18xx::/40/104553sendto
2001:7c7:18xx::/40/96553sendto
2001:7c7:18xx::/40/88553sendto
2001:7c7:18xx::/40/80553sendto
2001:7c7:18xx::/40/72553sendto
2001:7c7:18xx::/40/64553sendto
2001:7c7:18xx::/40/56553sendto
2001:7c7:18xx::/40/48553sendto
2001:7c7:18xx::/40/40553sendto
2001:7c7:98xx::/40/32553sendto
2001:747:18xx::/40/24UNROUTEDsendto
2001:87c7:18xx::/40/161221sendto

Meaning of status in Received column:

sendtoThe 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.
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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