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Session Report

Summary:
Test run at: 2024-01-26 20:38:30 GMT
Client Prefix (v4): 23.87.96.x/24
Client AS (v4): 20115 (CHARTER-20115)
IPv4 Probes: 66
Client Prefix (v6): 2600:6c44:36xx::/40
Client AS (v6): 20115 (CHARTER-20115)
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 (23.87.96.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
23.87.96.x/24/3120115rewritten
23.87.96.x/24/3020115rewritten
23.87.96.x/24/2920115rewritten
23.87.96.x/24/2820115rewritten
23.87.96.x/24/2720115rewritten
23.87.96.x/24/2620115rewritten
23.87.96.x/24/2520115rewritten
23.87.96.x/24/2420115rewritten
23.87.97.x/24/2320115rewritten
23.87.98.x/24/2220115rewritten
23.87.100.x/24/2120115rewritten
23.87.104.x/24/2020115rewritten
23.87.112.x/24/1920115rewritten
23.87.64.x/24/1820115rewritten
23.87.32.x/24/1720115rewritten
23.87.224.x/24/1620115rewritten
23.86.96.x/24/15UNROUTEDrewritten
23.85.96.x/24/14UNROUTEDrewritten
23.83.96.x/24/13395954rewritten
23.95.96.x/24/1236352rewritten
23.71.96.x/24/117922rewritten
23.119.96.x/24/107018rewritten
23.23.96.x/24/914618rewritten
23.215.96.x/24/820940rewritten

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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