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Session Report

Summary:
Test run at: 2019-08-07 22:37:39 GMT
Client Prefix (v4): 177.92.139.x/24
Client AS (v4): 263124
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
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 (177.92.139.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.92.139.x/24/31263124sendto
177.92.139.x/24/30263124sendto
177.92.139.x/24/29263124sendto
177.92.139.x/24/28263124sendto
177.92.139.x/24/27263124sendto
177.92.139.x/24/26263124sendto
177.92.139.x/24/25263124sendto
177.92.139.x/24/24263124sendto
177.92.138.x/24/23263124sendto
177.92.137.x/24/22263124sendto
177.92.143.x/24/21263124sendto
177.92.131.x/24/20263108sendto
177.92.155.x/24/19263125sendto
177.92.171.x/24/18263107sendto
177.92.203.x/24/17262729sendto
177.92.11.x/24/1614868sendto
177.93.139.x/24/1528366sendto
177.94.139.x/24/1427699sendto
177.88.139.x/24/13UNROUTEDsendto
177.84.139.x/24/12262591sendto
177.76.139.x/24/1126599rewritten
177.124.139.x/24/10262324sendto
177.28.139.x/24/926615sendto
177.220.139.x/24/814868sendto

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.
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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