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Session Report

Summary:
Test run at: 2017-09-19 14:47:45 GMT
Client Prefix (v4): 199.201.66.x/24
Client AS (v4): 54115 (FACEBOOK-CORP)
Client Prefix (v6): 2620:10d:c0xx::/40
Client AS (v6): 54115 (FACEBOOK-CORP)
IPv6 Probes: 86
Outbound spoofing summary (from the client to our server)
Source address type IPv6
Private - ULA 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:

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2620:10d:c0xx::/40/12054115natblock
2620:10d:c0xx::/40/11254115natblock
2620:10d:c0xx::/40/10454115natblock
2620:10d:c0xx::/40/9654115natblock
2620:10d:c0xx::/40/8854115natblock
2620:10d:c0xx::/40/8054115natblock
2620:10d:c0xx::/40/7254115natblock
2620:10d:c0xx::/40/6454115natblock
2620:10d:c0xx::/40/5654115natblock
2620:10d:c0xx::/40/4854115natblock
2620:10d:c0xx::/40/40UNROUTEDnatblock
2620:10d:40xx::/40/32UNROUTEDnatblock
2620:18d:c0xx::/40/24UNROUTEDnatblock
2620:810d:c0xx::/40/16UNROUTEDnatblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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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