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Session Report

Summary:
Test run at: 2018-09-12 22:10:40 GMT
Client Prefix (v4): 181.191.208.x/24
Client AS (v4): 267460
IPv4 Probes: 124
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /12
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.

Warnings:

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 (181.191.208.x/24) can spoof 1048575 neighboring addresses (within your /12 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
181.191.208.x/24/31267460sendto
181.191.208.x/24/30267460sendto
181.191.208.x/24/29267460sendto
181.191.208.x/24/28267460sendto
181.191.208.x/24/27267460sendto
181.191.208.x/24/26267460sendto
181.191.208.x/24/25267460sendto
181.191.208.x/24/24267460sendto
181.191.209.x/24/23267460sendto
181.191.210.x/24/22267460sendto
181.191.212.x/24/21267450sendto
181.191.216.x/24/20267560sendto
181.191.192.x/24/19267457sendto
181.191.240.x/24/18267456sendto
181.191.144.x/24/17267425sendto
181.191.80.x/24/16265790sendto
181.190.208.x/24/1514259sendto
181.189.208.x/24/1427792sendto
181.187.208.x/24/13UNROUTEDsendto
181.183.208.x/24/126306yes
181.175.208.x/24/1114522sendto
181.159.208.x/24/1026611sendto
181.255.208.x/24/926611sendto
181.63.208.x/24/8UNROUTEDsendto

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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