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Session Report

Summary:
Test run at: 2018-11-17 20:37:15 GMT
Client Prefix (v4): 31.10.33.x/24
Client AS (v4): 42004 (ULGRP-AS)
IPv4 Probes: 124
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
31.10.33.x/24/3142004sendto
31.10.33.x/24/3042004sendto
31.10.33.x/24/2942004sendto
31.10.33.x/24/2842004sendto
31.10.33.x/24/2742004sendto
31.10.33.x/24/2642004sendto
31.10.33.x/24/2542004sendto
31.10.33.x/24/2442004sendto
31.10.32.x/24/2342004sendto
31.10.35.x/24/2242004sendto
31.10.37.x/24/2142004sendto
31.10.41.x/24/2042004sendto
31.10.49.x/24/195396sendto
31.10.1.x/24/1847151sendto
31.10.97.x/24/1735271sendto
31.10.161.x/24/166830sendto
31.11.33.x/24/1531034sendto
31.8.33.x/24/1428812sendto
31.14.33.x/24/1344252sendto
31.2.33.x/24/1221243rewritten
31.26.33.x/24/11UNROUTEDsendto
31.42.33.x/24/108242sendto
31.74.33.x/24/912576sendto
31.138.33.x/24/815480sendto

Meaning of status in Received column:

rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.
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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