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Session Report

Summary:
Test run at: 2017-09-01 19:25:41 GMT
Client Prefix (v4): 176.103.41.x/24
Client AS (v4): 197447 (TESCO-AS)
IPv4 Probes: 117
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 (176.103.41.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
176.103.41.x/24/31197447natblock
176.103.41.x/24/30197447natblock
176.103.41.x/24/29197447natblock
176.103.41.x/24/28197447natblock
176.103.41.x/24/27197447natblock
176.103.41.x/24/26197447natblock
176.103.41.x/24/25197447natblock
176.103.41.x/24/24197447natblock
176.103.40.x/24/23197447natblock
176.103.43.x/24/22197447natblock
176.103.45.x/24/21197447natblock
176.103.33.x/24/2057613natblock
176.103.57.x/24/1948031natblock
176.103.9.x/24/1856812natblock
176.103.105.x/24/1747156natblock
176.103.169.x/24/16198389natblock
176.102.41.x/24/1521219natblock
176.101.41.x/24/1429577natblock
176.99.41.x/24/13200063natblock
176.111.41.x/24/1257960natblock
176.119.41.x/24/1142503natblock
176.71.41.x/24/101257natblock
176.39.41.x/24/939608natblock
176.231.41.x/24/812400natblock

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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