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Session Report

Summary:
Test run at: 2018-03-26 17:54:35 GMT
Client Prefix (v4): 180.183.91.x/24
Client AS (v4): 45758 (TTBP-AS-AP)
IPv4 Probes: 102
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
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.

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
180.183.91.x/24/3145758sendto
180.183.91.x/24/3045758sendto
180.183.91.x/24/2945758sendto
180.183.91.x/24/2845758sendto
180.183.91.x/24/2745758sendto
180.183.91.x/24/2645758sendto
180.183.91.x/24/2545758sendto
180.183.91.x/24/2445758sendto
180.183.90.x/24/2345758sendto
180.183.89.x/24/2245758sendto
180.183.95.x/24/2145758sendto
180.183.83.x/24/2045758sendto
180.183.75.x/24/1945758sendto
180.183.123.x/24/1845758sendto
180.183.27.x/24/1745758rewritten
180.183.219.x/24/1645758sendto
180.182.91.x/24/1517577sendto
180.181.91.x/24/147477sendto
180.179.91.x/24/1317439sendto
180.191.91.x/24/12132199sendto
180.167.91.x/24/114812sendto
180.151.91.x/24/1010029sendto
180.247.91.x/24/97713sendto
180.55.91.x/24/84713sendto

Meaning of status in Received column:

rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.
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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