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Session Report

Summary:
Test run at: 2021-03-23 14:15:15 GMT
Client Prefix (v4): 65.255.86.x/24
Client AS (v4): 11650 (PLDI)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /19

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.
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 (65.255.86.x/24) can spoof 8191 neighboring addresses (within your /19 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
65.255.86.x/24/3111650yes
65.255.86.x/24/3011650yes
65.255.86.x/24/2911650yes
65.255.86.x/24/2811650yes
65.255.86.x/24/2711650yes
65.255.86.x/24/2611650yes
65.255.86.x/24/2511650yes
65.255.86.x/24/2411650yes
65.255.87.x/24/2311650yes
65.255.84.x/24/2211650yes
65.255.82.x/24/2111650yes
65.255.94.x/24/2011650yes
65.255.70.x/24/1911650yes
65.255.118.x/24/1813986natblock
65.255.22.x/24/1725970natblock
65.255.214.x/24/1629930natblock
65.254.86.x/24/15394695natblock
65.253.86.x/24/14701natblock
65.251.86.x/24/13701natblock
65.247.86.x/24/12701natblock
65.239.86.x/24/11701natblock
65.223.86.x/24/10701natblock
65.191.86.x/24/911426natblock
65.127.86.x/24/8209natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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 able to spoof routable, non-adjacent source addresses through the first 5 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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