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Session Report

Summary:
Test run at: 2019-12-28 12:21:01 GMT
Client Prefix (v4): 138.185.146.x/24
Client AS (v4): 264345
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 (138.185.146.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.185.146.x/24/31264345rewritten
138.185.146.x/24/30264345rewritten
138.185.146.x/24/29264345rewritten
138.185.146.x/24/28264345rewritten
138.185.146.x/24/27264345rewritten
138.185.146.x/24/26264345rewritten
138.185.146.x/24/25264345rewritten
138.185.146.x/24/24264345rewritten
138.185.147.x/24/23264345rewritten
138.185.144.x/24/22264345rewritten
138.185.150.x/24/21263846rewritten
138.185.154.x/24/20263845rewritten
138.185.130.x/24/19263914rewritten
138.185.178.x/24/18264348rewritten
138.185.210.x/24/1728104rewritten
138.185.18.x/24/16264333rewritten
138.184.146.x/24/15UNROUTEDrewritten
138.187.146.x/24/143303rewritten
138.189.146.x/24/1312511rewritten
138.177.146.x/24/12UNROUTEDrewritten
138.169.146.x/24/11721rewritten
138.153.146.x/24/10721rewritten
138.249.146.x/24/9UNROUTEDrewritten
138.57.146.x/24/8UNROUTEDrewritten

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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