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Session Report

Summary:
Test run at: 2019-09-12 22:07:53 GMT
Client Prefix (v4): 90.155.74.x/24
Client AS (v4): 20712 (AS20712)
IPv4 Probes: 72
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /29
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.
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 (90.155.74.x/24) can spoof 7 neighboring addresses (within your /29 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
90.155.74.x/24/3120712yes
90.155.74.x/24/3020712yes
90.155.74.x/24/2920712yes
90.155.74.x/24/2820712natblock
90.155.74.x/24/2720712natblock
90.155.74.x/24/2620712natblock
90.155.74.x/24/2520712natblock
90.155.74.x/24/2420712natblock
90.155.75.x/24/2320712natblock
90.155.72.x/24/2220712natblock
90.155.78.x/24/2120712natblock
90.155.66.x/24/2020712natblock
90.155.90.x/24/1920712natblock
90.155.106.x/24/1820712natblock
90.155.10.x/24/1720712natblock
90.155.202.x/24/1629124natblock
90.154.74.x/24/1542610natblock
90.153.74.x/24/1435776natblock
90.159.74.x/24/139021natblock
90.147.74.x/24/12137natblock
90.139.74.x/24/111257natblock
90.187.74.x/24/1031334natblock
90.219.74.x/24/95607natblock
90.27.74.x/24/83215natblock

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 1 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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