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Session Report

Summary:
Test run at: 2017-03-11 11:32:04 GMT
Client Prefix (v4): 91.192.91.x/24
Client AS (v4): 42401 (ELOMZA-AS)
IPv4 Probes: 104
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 (91.192.91.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
91.192.91.x/24/3142401rewritten
91.192.91.x/24/3042401rewritten
91.192.91.x/24/2942401rewritten
91.192.91.x/24/2842401rewritten
91.192.91.x/24/2742401rewritten
91.192.91.x/24/2642401rewritten
91.192.91.x/24/2542401rewritten
91.192.91.x/24/2442401rewritten
91.192.90.x/24/2342401rewritten
91.192.89.x/24/2242401rewritten
91.192.95.x/24/2142413rewritten
91.192.83.x/24/2056630rewritten
91.192.75.x/24/1935824rewritten
91.192.123.x/24/1835491rewritten
91.192.27.x/24/17UNROUTEDrewritten
91.192.219.x/24/1642556rewritten
91.193.91.x/24/15UNROUTEDrewritten
91.194.91.x/24/1451167rewritten
91.196.91.x/24/1343124rewritten
91.200.91.x/24/12UNROUTEDrewritten
91.208.91.x/24/118437rewritten
91.224.91.x/24/1051463rewritten
91.128.91.x/24/91257rewritten
91.64.91.x/24/831334rewritten

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 able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
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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