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Session Report

Summary:
Test run at: 2020-04-22 12:55:25 GMT
Client Prefix (v4): 191.34.164.x/24
Client AS (v4): 18881
IPv4 Probes: 75
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 (191.34.164.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
191.34.164.x/24/3118881rewritten
191.34.164.x/24/3018881natblock
191.34.164.x/24/2918881rewritten
191.34.164.x/24/2818881rewritten
191.34.164.x/24/2718881rewritten
191.34.164.x/24/2618881rewritten
191.34.164.x/24/2518881rewritten
191.34.164.x/24/2418881rewritten
191.34.165.x/24/2318881rewritten
191.34.166.x/24/2218881rewritten
191.34.160.x/24/2118881rewritten
191.34.172.x/24/2018881rewritten
191.34.180.x/24/1918881rewritten
191.34.132.x/24/1818881rewritten
191.34.228.x/24/1718881rewritten
191.34.36.x/24/1618881rewritten
191.35.164.x/24/1518881rewritten
191.32.164.x/24/1410429rewritten
191.38.164.x/24/13UNROUTEDrewritten
191.42.164.x/24/127738rewritten
191.50.164.x/24/1126615rewritten
191.2.164.x/24/107738rewritten
191.98.164.x/24/927843rewritten
191.162.164.x/24/826615rewritten

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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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