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Session Report

Summary:
Test run at: 2022-06-18 14:50:44 GMT
Client Prefix (v4): 143.255.60.x/24
Client AS (v4): 53112
IPv4 Probes: 60
Client Prefix (v6): 2804:d0c:80xx::/40
Client AS (v6): 53112
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.
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)

IPv4 Adjacent Netblock Testing:

Your host (143.255.60.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
143.255.60.x/24/3153112rewritten
143.255.60.x/24/3053112rewritten
143.255.60.x/24/2953112rewritten
143.255.60.x/24/2853112rewritten
143.255.60.x/24/2753112rewritten
143.255.60.x/24/2653112rewritten
143.255.60.x/24/2553112rewritten
143.255.60.x/24/2453112rewritten
143.255.61.x/24/2353112rewritten
143.255.62.x/24/2253112rewritten
143.255.56.x/24/2133182rewritten
143.255.52.x/24/20265139rewritten
143.255.44.x/24/19263623rewritten
143.255.28.x/24/18264644rewritten
143.255.124.x/24/17262343rewritten
143.255.188.x/24/16265151rewritten
143.254.60.x/24/153734rewritten
143.253.60.x/24/14UNROUTEDrewritten
143.251.60.x/24/13UNROUTEDrewritten
143.247.60.x/24/12UNROUTEDrewritten
143.239.60.x/24/111213rewritten
143.223.60.x/24/10UNROUTEDrewritten
143.191.60.x/24/9UNROUTEDrewritten
143.127.60.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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