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Session Report

Summary:
Test run at: 2023-09-18 17:49:39 GMT
Client Prefix (v4): 200.3.170.x/24
Client AS (v4): 11815
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 (200.3.170.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.3.170.x/24/3111815natblock
200.3.170.x/24/3011815natblock
200.3.170.x/24/2911815natblock
200.3.170.x/24/2811815natblock
200.3.170.x/24/2711815natblock
200.3.170.x/24/2611815natblock
200.3.170.x/24/2511815natblock
200.3.170.x/24/2411815natblock
200.3.171.x/24/2311815natblock
200.3.168.x/24/2211815natblock
200.3.174.x/24/2111815natblock
200.3.162.x/24/203816natblock
200.3.186.x/24/1927935natblock
200.3.138.x/24/18UNROUTEDnatblock
200.3.234.x/24/17UNROUTEDnatblock
200.3.42.x/24/167303natblock
200.2.170.x/24/1527775natblock
200.1.170.x/24/14UNROUTEDnatblock
200.7.170.x/24/1327828natblock
200.11.170.x/24/128048natblock
200.19.170.x/24/111916natblock
200.35.170.x/24/1026617natblock
200.67.170.x/24/98151natblock
200.131.170.x/24/81916natblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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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