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Session Report

Summary:
Test run at: 2020-04-01 17:51:24 GMT
Client Prefix (v4): 50.37.119.x/24
Client AS (v4): 27017 (ZIPLY-FIBER-LEGACY-ASN)
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 (50.37.119.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
50.37.119.x/24/3127017natblock
50.37.119.x/24/3027017natblock
50.37.119.x/24/2927017natblock
50.37.119.x/24/2827017natblock
50.37.119.x/24/2727017natblock
50.37.119.x/24/2627017natblock
50.37.119.x/24/2527017natblock
50.37.119.x/24/2427017natblock
50.37.118.x/24/2327017natblock
50.37.117.x/24/2227017natblock
50.37.115.x/24/2127017natblock
50.37.127.x/24/2027017natblock
50.37.103.x/24/1927017natblock
50.37.87.x/24/1827017natblock
50.37.55.x/24/175650natblock
50.37.247.x/24/1627017natblock
50.36.119.x/24/155650natblock
50.39.119.x/24/1427017natblock
50.33.119.x/24/135650natblock
50.45.119.x/24/125650natblock
50.53.119.x/24/1127017natblock
50.5.119.x/24/106181natblock
50.101.119.x/24/9577natblock
50.165.119.x/24/87922natblock

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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