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Session Report

Summary:
Test run at: 2021-12-29 23:00:02 GMT
Client Prefix (v4): 131.161.0.x/24
Client AS (v4): 262907
IPv4 Probes: 63
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /29
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 (131.161.0.x/24) can spoof 7 neighboring addresses (within your /29 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
131.161.0.x/24/31262907yes
131.161.0.x/24/30262907yes
131.161.0.x/24/29262907yes
131.161.0.x/24/28262907no
131.161.0.x/24/27262907no
131.161.0.x/24/26262907no
131.161.0.x/24/25262907no
131.161.0.x/24/24262907no
131.161.1.x/24/23262907no
131.161.2.x/24/22262907no
131.161.4.x/24/2128201no
131.161.8.x/24/20270880no
131.161.16.x/24/1928343no
131.161.32.x/24/18264394no
131.161.64.x/24/17264369no
131.161.128.x/24/16264378no
131.160.0.x/24/15158no
131.163.0.x/24/14UNROUTEDno
131.165.0.x/24/136834no
131.169.0.x/24/121754no
131.177.0.x/24/111759no
131.129.0.x/24/104685no
131.225.0.x/24/93152no
131.33.0.x/24/8721no

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)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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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