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Session Report

Summary:
Test run at: 2019-07-15 22:32:04 GMT
Client Prefix (v4): 189.90.90.x/24
Client AS (v4): 262700
IPv4 Probes: 96
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 (189.90.90.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
189.90.90.x/24/31262700rewritten
189.90.90.x/24/30262700rewritten
189.90.90.x/24/29262700rewritten
189.90.90.x/24/28262700rewritten
189.90.90.x/24/27262700rewritten
189.90.90.x/24/26262700rewritten
189.90.90.x/24/25262700rewritten
189.90.90.x/24/24262700rewritten
189.90.91.x/24/23262700rewritten
189.90.88.x/24/22262700rewritten
189.90.94.x/24/21262700rewritten
189.90.82.x/24/20262700rewritten
189.90.74.x/24/1928193rewritten
189.90.122.x/24/18262808rewritten
189.90.26.x/24/1728190rewritten
189.90.218.x/24/1628199rewritten
189.91.90.x/24/1517222rewritten
189.88.90.x/24/144230rewritten
189.94.90.x/24/1322085rewritten
189.82.90.x/24/127738rewritten
189.74.90.x/24/118167rewritten
189.122.90.x/24/1028573rewritten
189.26.90.x/24/918881rewritten
189.218.90.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 able to spoof routable, non-adjacent source addresses through the first 4 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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