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Session Report

Summary:
Test run at: 2019-01-30 15:17:11 GMT
Client Prefix (v4): 200.159.255.x/24
Client AS (v4): 1916
IPv4 Probes: 120
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 (200.159.255.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.159.255.x/24/311916no
200.159.255.x/24/301916no
200.159.255.x/24/291916no
200.159.255.x/24/281916no
200.159.255.x/24/271916no
200.159.255.x/24/261916no
200.159.255.x/24/251916no
200.159.255.x/24/241916no
200.159.254.x/24/231916no
200.159.253.x/24/221916no
200.159.251.x/24/211916no
200.159.247.x/24/201916no
200.159.239.x/24/1923002no
200.159.223.x/24/1823106no
200.159.191.x/24/1728605no
200.159.127.x/24/1610429no
200.158.255.x/24/1527699no
200.157.255.x/24/1417379no
200.155.255.x/24/13UNROUTEDno
200.151.255.x/24/127738no
200.143.255.x/24/111916no
200.191.255.x/24/104230no
200.223.255.x/24/97738no
200.31.255.x/24/852416no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
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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