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Session Report

Summary:
Test run at: 2017-06-22 03:04:55 GMT
Client Prefix (v4): 76.4.123.x/24
Client AS (v4): 209 (CENTURYLINK-US-LEGACY-QWEST)
IPv4 Probes: 118
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
Largest spoofable neighbor prefix length /8

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.

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 (76.4.123.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
76.4.123.x/24/31209yes
76.4.123.x/24/30209yes
76.4.123.x/24/29209yes
76.4.123.x/24/28209yes
76.4.123.x/24/27209yes
76.4.123.x/24/26209yes
76.4.123.x/24/25209yes
76.4.123.x/24/24209yes
76.4.122.x/24/23209yes
76.4.121.x/24/22209yes
76.4.127.x/24/21209yes
76.4.115.x/24/20209yes
76.4.107.x/24/19209yes
76.4.91.x/24/18209yes
76.4.59.x/24/17209yes
76.4.251.x/24/16209yes
76.5.123.x/24/15209yes
76.6.123.x/24/14209yes
76.0.123.x/24/13209yes
76.12.123.x/24/1220021yes
76.20.123.x/24/117922yes
76.36.123.x/24/10UNROUTEDyes
76.68.123.x/24/9577yes
76.132.123.x/24/87922yes

Meaning of status in Received column:

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

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 10 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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