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Session Report

Summary:
Test run at: 2017-09-27 04:10:29 GMT
Client Prefix (v4): 202.56.51.x/24
Client AS (v4): 9876 (NOWNEW-AS-AP)
IPv4 Probes: 117
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 (202.56.51.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
202.56.51.x/24/319876rewritten
202.56.51.x/24/309876rewritten
202.56.51.x/24/299876rewritten
202.56.51.x/24/289876rewritten
202.56.51.x/24/279876rewritten
202.56.51.x/24/269876rewritten
202.56.51.x/24/259876rewritten
202.56.51.x/24/249876rewritten
202.56.50.x/24/239876rewritten
202.56.49.x/24/229876rewritten
202.56.55.x/24/219876rewritten
202.56.59.x/24/2045885rewritten
202.56.35.x/24/199876rewritten
202.56.19.x/24/1818075rewritten
202.56.115.x/24/17UNROUTEDrewritten
202.56.179.x/24/167494rewritten
202.57.51.x/24/159927rewritten
202.58.51.x/24/149667rewritten
202.60.51.x/24/13UNROUTEDrewritten
202.48.51.x/24/12UNROUTEDrewritten
202.40.51.x/24/11UNROUTEDrewritten
202.24.51.x/24/10UNROUTEDrewritten
202.120.51.x/24/94538rewritten
202.184.51.x/24/89930rewritten

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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