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Session Report

Summary:
Test run at: 2018-08-16 16:29:16 GMT
Client Prefix (v4): 208.81.6.x/24
Client AS (v4): 18451 (LESNET)
IPv4 Probes: 99
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length none

Meaning of result status in column:

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 (208.81.6.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
208.81.6.x/24/3118451natblock
208.81.6.x/24/3018451natblock
208.81.6.x/24/2918451natblock
208.81.6.x/24/2818451natblock
208.81.6.x/24/2718451natblock
208.81.6.x/24/2618451natblock
208.81.6.x/24/2518451natblock
208.81.6.x/24/2418451natblock
208.81.7.x/24/2318451natblock
208.81.4.x/24/2218451natblock
208.81.2.x/24/2118451natblock
208.81.14.x/24/2017382natblock
208.81.22.x/24/1910340natblock
208.81.38.x/24/1833010natblock
208.81.70.x/24/17UNROUTEDnatblock
208.81.134.x/24/1623052natblock
208.80.6.x/24/1518779natblock
208.83.6.x/24/14UNROUTEDnatblock
208.85.6.x/24/1340244natblock
208.89.6.x/24/1217359natblock
208.65.6.x/24/1125813natblock
208.113.6.x/24/1021570natblock
208.17.6.x/24/91239natblock
208.209.6.x/24/8701natblock

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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