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Session Report

Summary:
Test run at: 2022-08-09 13:38:31 GMT
Client Prefix (v4): 200.155.36.x/24
Client AS (v4): 22689
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /22
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 (200.155.36.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.155.36.x/24/3122689yes
200.155.36.x/24/3022689yes
200.155.36.x/24/2922689yes
200.155.36.x/24/2822689yes
200.155.36.x/24/2722689yes
200.155.36.x/24/2622689yes
200.155.36.x/24/2522689yes
200.155.36.x/24/2422689yes
200.155.37.x/24/2322689yes
200.155.38.x/24/2222689yes
200.155.32.x/24/2122689no
200.155.44.x/24/2022689no
200.155.52.x/24/1922689no
200.155.4.x/24/1816397no
200.155.100.x/24/1723002no
200.155.164.x/24/1611432no
200.154.36.x/24/15UNROUTEDno
200.153.36.x/24/1410429no
200.159.36.x/24/1310429no
200.147.36.x/24/127162no
200.139.36.x/24/111916no
200.187.36.x/24/1025832no
200.219.36.x/24/9270800no
200.27.36.x/24/86429no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

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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