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Session Report

Summary:
Test run at: 2019-12-15 18:46:20 GMT
Client Prefix (v4): 201.49.70.x/24
Client AS (v4): 28263
IPv4 Probes: 75
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 (201.49.70.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
201.49.70.x/24/3128263rewritten
201.49.70.x/24/3028263rewritten
201.49.70.x/24/2928263rewritten
201.49.70.x/24/2828263rewritten
201.49.70.x/24/2728263rewritten
201.49.70.x/24/2628263rewritten
201.49.70.x/24/2528263rewritten
201.49.70.x/24/2428263rewritten
201.49.71.x/24/2328263rewritten
201.49.68.x/24/2228263rewritten
201.49.66.x/24/2128263rewritten
201.49.78.x/24/2028263rewritten
201.49.86.x/24/1928263rewritten
201.49.102.x/24/1828303rewritten
201.49.6.x/24/1711921rewritten
201.49.198.x/24/1628287rewritten
201.48.70.x/24/1516735rewritten
201.51.70.x/24/147738rewritten
201.53.70.x/24/13UNROUTEDrewritten
201.57.70.x/24/124230rewritten
201.33.70.x/24/11262983rewritten
201.17.70.x/24/1028573rewritten
201.113.70.x/24/9UNROUTEDrewritten
201.177.70.x/24/822927rewritten

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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