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Session Report

Summary:
Test run at: 2024-12-02 07:09:00 GMT
Client Prefix (v4): 158.38.11.x/24
Client AS (v4): 224 (UNINETT)
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
Largest spoofable neighbor prefix length none
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 (158.38.11.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
158.38.11.x/24/31224no
158.38.11.x/24/30224sendto
158.38.11.x/24/29224sendto
158.38.11.x/24/28224no
158.38.11.x/24/27224sendto
158.38.11.x/24/26224sendto
158.38.11.x/24/25224no
158.38.11.x/24/24224sendto
158.38.10.x/24/23224sendto
158.38.9.x/24/22224sendto
158.38.15.x/24/21224sendto
158.38.3.x/24/20224no
158.38.27.x/24/19224sendto
158.38.43.x/24/18224no
158.38.75.x/24/17224sendto
158.38.139.x/24/16224sendto
158.39.11.x/24/15224no
158.36.11.x/24/14224sendto
158.34.11.x/24/13UNROUTEDno
158.46.11.x/24/1239927sendto
158.54.11.x/24/11UNROUTEDsendto
158.6.11.x/24/10367sendto
158.102.11.x/24/92594sendto
158.166.11.x/24/842848sendto

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
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.
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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