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Session Report

Summary:
Test run at: 2020-03-13 22:58:40 GMT
Client Prefix (v4): 209.173.166.x/24
Client AS (v4): 7106 (INDEPENDENTSFIBERNETWORK)
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 (209.173.166.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
209.173.166.x/24/317106natblock
209.173.166.x/24/307106natblock
209.173.166.x/24/297106natblock
209.173.166.x/24/287106natblock
209.173.166.x/24/277106natblock
209.173.166.x/24/267106natblock
209.173.166.x/24/257106natblock
209.173.166.x/24/247106natblock
209.173.167.x/24/237106natblock
209.173.164.x/24/227106natblock
209.173.162.x/24/21394708natblock
209.173.174.x/24/207106natblock
209.173.182.x/24/19394708natblock
209.173.134.x/24/1815085natblock
209.173.230.x/24/1715250natblock
209.173.38.x/24/1618474natblock
209.172.166.x/24/156479natblock
209.175.166.x/24/146325natblock
209.169.166.x/24/1346618natblock
209.165.166.x/24/128047natblock
209.189.166.x/24/11UNROUTEDnatblock
209.141.166.x/24/1054614natblock
209.237.166.x/24/919871natblock
209.45.166.x/24/8209natblock

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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