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Session Report

Summary:
Test run at: 2018-07-02 13:30:18 GMT
Client Prefix (v4): 207.255.41.x/24
Client AS (v4): 11776 (ATLANTICBB-JOHNSTOWN)
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 (207.255.41.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
207.255.41.x/24/3111776rewritten
207.255.41.x/24/3011776rewritten
207.255.41.x/24/2911776rewritten
207.255.41.x/24/2811776rewritten
207.255.41.x/24/2711776rewritten
207.255.41.x/24/2611776rewritten
207.255.41.x/24/2511776rewritten
207.255.41.x/24/2411776rewritten
207.255.40.x/24/2311776rewritten
207.255.43.x/24/2211776rewritten
207.255.45.x/24/2111776rewritten
207.255.33.x/24/2011776rewritten
207.255.57.x/24/1911776rewritten
207.255.9.x/24/1811776rewritten
207.255.105.x/24/1711776rewritten
207.255.169.x/24/1611776rewritten
207.254.41.x/24/15395337rewritten
207.253.41.x/24/1415321rewritten
207.251.41.x/24/1332710rewritten
207.247.41.x/24/12701rewritten
207.239.41.x/24/112828rewritten
207.223.41.x/24/1017223rewritten
207.191.41.x/24/93549rewritten
207.127.41.x/24/814135rewritten

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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