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Session Report

Summary:
Test run at: 2018-05-03 11:52:50 GMT
Client Prefix (v4): 143.0.149.x/24
Client AS (v4): 264005
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 (143.0.149.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
143.0.149.x/24/31264005rewritten
143.0.149.x/24/30264005rewritten
143.0.149.x/24/29264005rewritten
143.0.149.x/24/28264005rewritten
143.0.149.x/24/27264005rewritten
143.0.149.x/24/26264005rewritten
143.0.149.x/24/25264005rewritten
143.0.149.x/24/24264005rewritten
143.0.148.x/24/23264005rewritten
143.0.151.x/24/22264005rewritten
143.0.145.x/24/21264020rewritten
143.0.157.x/24/20264012rewritten
143.0.133.x/24/19264021rewritten
143.0.181.x/24/18264007rewritten
143.0.213.x/24/17262746rewritten
143.0.21.x/24/16263985rewritten
143.1.149.x/24/1511003rewritten
143.2.149.x/24/1411003rewritten
143.4.149.x/24/1311003rewritten
143.8.149.x/24/123561rewritten
143.16.149.x/24/1111003rewritten
143.32.149.x/24/1011003rewritten
143.64.149.x/24/9UNROUTEDrewritten
143.128.149.x/24/82018rewritten

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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