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Session Report

Summary:
Test run at: 2017-02-02 15:55:08 GMT
Client Prefix (v4): 81.164.87.x/24
Client AS (v4): 6848 (TELENET-AS)
IPv4 Probes: 90
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 (81.164.87.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
81.164.87.x/24/316848rewritten
81.164.87.x/24/306848rewritten
81.164.87.x/24/296848rewritten
81.164.87.x/24/286848rewritten
81.164.87.x/24/276848rewritten
81.164.87.x/24/266848rewritten
81.164.87.x/24/256848rewritten
81.164.87.x/24/246848rewritten
81.164.86.x/24/236848rewritten
81.164.85.x/24/226848rewritten
81.164.83.x/24/216848rewritten
81.164.95.x/24/206848rewritten
81.164.71.x/24/196848rewritten
81.164.119.x/24/186848rewritten
81.164.23.x/24/176848rewritten
81.164.215.x/24/166848rewritten
81.165.87.x/24/156848rewritten
81.166.87.x/24/1429695rewritten
81.160.87.x/24/13UNROUTEDrewritten
81.172.87.x/24/126739rewritten
81.180.87.x/24/11UNROUTEDrewritten
81.132.87.x/24/102856rewritten
81.228.87.x/24/93301rewritten
81.36.87.x/24/83352rewritten

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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