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Session Report

Summary:
Test run at: 2021-08-30 00:25:37 GMT
Client Prefix (v4): 97.123.109.x/24
Client AS (v4): 209 (CENTURYLINK-US-LEGACY-QWEST)
IPv4 Probes: 66
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 (97.123.109.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
97.123.109.x/24/31209rewritten
97.123.109.x/24/30209rewritten
97.123.109.x/24/29209rewritten
97.123.109.x/24/28209rewritten
97.123.109.x/24/27209rewritten
97.123.109.x/24/26209rewritten
97.123.109.x/24/25209rewritten
97.123.109.x/24/24209rewritten
97.123.108.x/24/23209rewritten
97.123.111.x/24/22209rewritten
97.123.105.x/24/21209rewritten
97.123.101.x/24/20209rewritten
97.123.125.x/24/19209rewritten
97.123.77.x/24/18209rewritten
97.123.45.x/24/17209rewritten
97.123.237.x/24/16209rewritten
97.122.109.x/24/15209rewritten
97.121.109.x/24/14209rewritten
97.127.109.x/24/13209rewritten
97.115.109.x/24/12209rewritten
97.107.109.x/24/1112208rewritten
97.91.109.x/24/1020115rewritten
97.59.109.x/24/96167rewritten
97.251.109.x/24/86167rewritten

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 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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