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Session Report

Summary:
Test run at: 2019-09-25 01:16:37 GMT
Client Prefix (v4): 192.140.97.x/24
Client AS (v4): 266261
IPv4 Probes: 72
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /9

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.

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 (192.140.97.x/24) can spoof 8388607 neighboring addresses (within your /9 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
192.140.97.x/24/31266261yes
192.140.97.x/24/30266261yes
192.140.97.x/24/29266261yes
192.140.97.x/24/28266261yes
192.140.97.x/24/27266261yes
192.140.97.x/24/26266261yes
192.140.97.x/24/25266261yes
192.140.97.x/24/24266261yes
192.140.96.x/24/23266261yes
192.140.99.x/24/22266261yes
192.140.101.x/24/21266256yes
192.140.105.x/24/20266262yes
192.140.113.x/24/19266243yes
192.140.65.x/24/18266550yes
192.140.33.x/24/17266201yes
192.140.225.x/24/1656233yes
192.141.97.x/24/15UNROUTEDnatblock
192.142.97.x/24/1436916yes
192.136.97.x/24/13UNROUTEDnatblock
192.132.97.x/24/12UNROUTEDnatblock
192.156.97.x/24/11UNROUTEDnatblock
192.172.97.x/24/10UNROUTEDnatblock
192.204.97.x/24/92914yes
192.12.97.x/24/8UNROUTEDnatblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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 9 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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