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Session Report

Summary:
Test run at: 2018-08-12 12:04:14 GMT
Client Prefix (v4): 185.159.156.x/24
Client AS (v4): 8473 (BAHNHOF)
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 (185.159.156.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.159.156.x/24/318473rewritten
185.159.156.x/24/308473rewritten
185.159.156.x/24/298473rewritten
185.159.156.x/24/288473rewritten
185.159.156.x/24/278473rewritten
185.159.156.x/24/268473rewritten
185.159.156.x/24/258473rewritten
185.159.156.x/24/248473rewritten
185.159.157.x/24/2359898rewritten
185.159.158.x/24/2256704rewritten
185.159.152.x/24/21201999rewritten
185.159.148.x/24/20UNROUTEDrewritten
185.159.140.x/24/19UNROUTEDrewritten
185.159.188.x/24/1833915rewritten
185.159.220.x/24/1739923rewritten
185.159.28.x/24/16202618rewritten
185.158.156.x/24/15197328rewritten
185.157.156.x/24/1458243rewritten
185.155.156.x/24/13UNROUTEDrewritten
185.151.156.x/24/128717rewritten
185.143.156.x/24/11203179rewritten
185.191.156.x/24/10207044rewritten
185.223.156.x/24/9UNROUTEDrewritten
185.31.156.x/24/89186rewritten

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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