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Session Report

Summary:
Test run at: 2022-06-10 16:19:56 GMT
Client Prefix (v4): 132.247.33.x/24
Client AS (v4): 278
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 (132.247.33.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
132.247.33.x/24/31278rewritten
132.247.33.x/24/30278rewritten
132.247.33.x/24/29278rewritten
132.247.33.x/24/28278rewritten
132.247.33.x/24/27278rewritten
132.247.33.x/24/26278rewritten
132.247.33.x/24/25278rewritten
132.247.33.x/24/24278rewritten
132.247.32.x/24/23278rewritten
132.247.35.x/24/22278rewritten
132.247.37.x/24/21278rewritten
132.247.41.x/24/20278rewritten
132.247.49.x/24/19278rewritten
132.247.1.x/24/18278rewritten
132.247.97.x/24/17278rewritten
132.247.161.x/24/16278rewritten
132.246.33.x/24/1525689rewritten
132.245.33.x/24/148075rewritten
132.243.33.x/24/1314962rewritten
132.255.33.x/24/12265076rewritten
132.231.33.x/24/11680rewritten
132.215.33.x/24/10376rewritten
132.183.33.x/24/940831rewritten
132.119.33.x/24/8306rewritten

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 10 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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