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Session Report

Summary:
Test run at: 2022-03-17 12:22:48 GMT
Client Prefix (v4): 186.233.7.x/24
Client AS (v4): 270890
IPv4 Probes: 60
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 (186.233.7.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.233.7.x/24/31270890rewritten
186.233.7.x/24/30270890rewritten
186.233.7.x/24/29270890rewritten
186.233.7.x/24/28270890rewritten
186.233.7.x/24/27270890rewritten
186.233.7.x/24/26270890rewritten
186.233.7.x/24/25270890rewritten
186.233.7.x/24/24270890rewritten
186.233.6.x/24/23270890rewritten
186.233.5.x/24/22270890rewritten
186.233.3.x/24/21270755rewritten
186.233.15.x/24/20263083rewritten
186.233.23.x/24/19262777rewritten
186.233.39.x/24/1853201rewritten
186.233.71.x/24/17262781rewritten
186.233.135.x/24/16262789rewritten
186.232.7.x/24/1553183rewritten
186.235.7.x/24/14262780rewritten
186.237.7.x/24/13262797rewritten
186.225.7.x/24/1228343rewritten
186.249.7.x/24/1128250rewritten
186.201.7.x/24/1010429rewritten
186.169.7.x/24/93816rewritten
186.105.7.x/24/87418rewritten

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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