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Session Report

Summary:
Test run at: 2020-12-09 14:34:42 GMT
Client Prefix (v4): 143.208.196.x/24
Client AS (v4): 28343
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
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.
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 (143.208.196.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
143.208.196.x/24/3128343natblock
143.208.196.x/24/3028343natblock
143.208.196.x/24/2928343natblock
143.208.196.x/24/2828343natblock
143.208.196.x/24/2728343natblock
143.208.196.x/24/2628343natblock
143.208.196.x/24/2528343natblock
143.208.196.x/24/2428343natblock
143.208.197.x/24/2328343natblock
143.208.198.x/24/2228343natblock
143.208.192.x/24/21262729natblock
143.208.204.x/24/20262422natblock
143.208.212.x/24/19263565natblock
143.208.228.x/24/18263004natblock
143.208.132.x/24/1727843natblock
143.208.68.x/24/1653094natblock
143.209.196.x/24/15UNROUTEDnatblock
143.210.196.x/24/14786natblock
143.212.196.x/24/131602natblock
143.216.196.x/24/124739natblock
143.192.196.x/24/11UNROUTEDnatblock
143.240.196.x/24/10174natblock
143.144.196.x/24/9385natblock
143.80.196.x/24/8UNROUTEDnatblock

Meaning of status in Received column:

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 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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