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Session Report

Summary:
Test run at: 2018-07-25 01:52:52 GMT
Client Prefix (v4): 187.33.56.x/24
Client AS (v4): 28194
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

Meaning of result status in column:

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 (187.33.56.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.33.56.x/24/3128194rewritten
187.33.56.x/24/3028194rewritten
187.33.56.x/24/2928194rewritten
187.33.56.x/24/2828194rewritten
187.33.56.x/24/2728194rewritten
187.33.56.x/24/2628194rewritten
187.33.56.x/24/2528194rewritten
187.33.56.x/24/2428194rewritten
187.33.57.x/24/2328194rewritten
187.33.58.x/24/2228194rewritten
187.33.60.x/24/2128194rewritten
187.33.48.x/24/20263080rewritten
187.33.40.x/24/19262421rewritten
187.33.24.x/24/1826592rewritten
187.33.120.x/24/1753083rewritten
187.33.184.x/24/16262694rewritten
187.32.56.x/24/1516735rewritten
187.35.56.x/24/1427699rewritten
187.37.56.x/24/1328573rewritten
187.41.56.x/24/127738rewritten
187.49.56.x/24/11262806rewritten
187.1.56.x/24/1028247rewritten
187.97.56.x/24/926615rewritten
187.161.56.x/24/811888rewritten

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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