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Session Report

Summary:
Test run at: 2017-03-14 09:06:38 GMT
Client Prefix (v4): 91.224.175.x/24
Client AS (v4): 42525 (GlobalConnect-Network)
IPv4 Probes: 90
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /24
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 (91.224.175.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
91.224.175.x/24/3142525yes
91.224.175.x/24/3042525yes
91.224.175.x/24/2942525yes
91.224.175.x/24/2842525yes
91.224.175.x/24/2742525yes
91.224.175.x/24/2642525yes
91.224.175.x/24/2542525yes
91.224.175.x/24/2442525yes
91.224.174.x/24/2342525natblock
91.224.173.x/24/2256513natblock
91.224.171.x/24/21UNROUTEDnatblock
91.224.167.x/24/2056451natblock
91.224.191.x/24/19198046natblock
91.224.143.x/24/1834393natblock
91.224.239.x/24/17197679natblock
91.224.47.x/24/1659945natblock
91.225.175.x/24/1547266natblock
91.226.175.x/24/1456690natblock
91.228.175.x/24/13UNROUTEDnatblock
91.232.175.x/24/12198232natblock
91.240.175.x/24/11UNROUTEDnatblock
91.192.175.x/24/1025549natblock
91.160.175.x/24/912322natblock
91.96.175.x/24/89145natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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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