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Session Report

Summary:
Test run at: 2022-02-20 19:40:50 GMT
Client Prefix (v4): 177.87.94.x/24
Client AS (v4): 52592
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 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 (177.87.94.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.87.94.x/24/3152592natblock
177.87.94.x/24/3052592natblock
177.87.94.x/24/2952592natblock
177.87.94.x/24/2852592natblock
177.87.94.x/24/2752592natblock
177.87.94.x/24/2652592natblock
177.87.94.x/24/2552592natblock
177.87.94.x/24/2452592rewritten
177.87.95.x/24/2352592natblock
177.87.92.x/24/2252592natblock
177.87.90.x/24/2128334natblock
177.87.86.x/24/20270700natblock
177.87.78.x/24/19262650natblock
177.87.126.x/24/18263385natblock
177.87.30.x/24/17263384natblock
177.87.222.x/24/16262907natblock
177.86.94.x/24/1552568natblock
177.85.94.x/24/1461902natblock
177.83.94.x/24/1328573natblock
177.95.94.x/24/1227699natblock
177.71.94.x/24/11263292natblock
177.119.94.x/24/1026599natblock
177.23.94.x/24/9262268natblock
177.215.94.x/24/826599natblock

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.
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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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