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Session Report

Summary:
Test run at: 2017-03-01 20:25:34 GMT
Client Prefix (v4): 209.143.41.x/24
Client AS (v4): 7106 (INDEPENDENTSFIBERNETWORK)
IPv4 Probes: 104
Client Prefix (v6): 2607:fa10:xx::/40
Client AS (v6): 7106 (INDEPENDENTSFIBERNETWORK)
IPv6 Probes: 72
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedunknown
Routable receivedunknown
Largest spoofable neighbor prefix length /8none
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 (209.143.41.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
209.143.41.x/24/317106yes
209.143.41.x/24/307106yes
209.143.41.x/24/297106yes
209.143.41.x/24/287106yes
209.143.41.x/24/277106yes
209.143.41.x/24/267106yes
209.143.41.x/24/257106yes
209.143.41.x/24/247106yes
209.143.40.x/24/237106yes
209.143.43.x/24/227106yes
209.143.45.x/24/217106yes
209.143.33.x/24/207106yes
209.143.57.x/24/19394708yes
209.143.9.x/24/187106yes
209.143.105.x/24/1717054yes
209.143.169.x/24/16UNROUTEDnatblock
209.142.41.x/24/1553732yes
209.141.41.x/24/1453667yes
209.139.41.x/24/136459yes
209.135.41.x/24/1211329yes
209.159.41.x/24/117029yes
209.175.41.x/24/106325yes
209.207.41.x/24/919108yes
209.15.41.x/24/813768yes

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)
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 able to spoof routable, non-adjacent source addresses through the first 16 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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