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Session Report

Summary:
Test run at: 2018-05-15 17:53:09 GMT
Client Prefix (v4): 41.223.118.x/24
Client AS (v4): 36962 (MTNZ-AS)
IPv4 Probes: 99
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
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 (41.223.118.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
41.223.118.x/24/3136962rewritten
41.223.118.x/24/3036962rewritten
41.223.118.x/24/2936962rewritten
41.223.118.x/24/2836962rewritten
41.223.118.x/24/2736962rewritten
41.223.118.x/24/2636962rewritten
41.223.118.x/24/2536962rewritten
41.223.118.x/24/2436962rewritten
41.223.119.x/24/2336962rewritten
41.223.116.x/24/2236962rewritten
41.223.114.x/24/21UNROUTEDrewritten
41.223.126.x/24/2032017rewritten
41.223.102.x/24/1936917rewritten
41.223.86.x/24/1837075rewritten
41.223.54.x/24/17UNROUTEDrewritten
41.223.246.x/24/1632437rewritten
41.222.118.x/24/1537173rewritten
41.221.118.x/24/14UNROUTEDrewritten
41.219.118.x/24/1337009rewritten
41.215.118.x/24/1215808rewritten
41.207.118.x/24/1129259rewritten
41.255.118.x/24/1021003rewritten
41.159.118.x/24/916058rewritten
41.95.118.x/24/836998rewritten

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.

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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