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Session Report

Summary:
Test run at: 2020-09-02 13:18:01 GMT
Client Prefix (v4): 156.146.63.x/24
Client AS (v4): 60068 (CDN77)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
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.

IPv4 Adjacent Netblock Testing:

Your host (156.146.63.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
156.146.63.x/24/3160068natblock
156.146.63.x/24/3060068natblock
156.146.63.x/24/2960068natblock
156.146.63.x/24/2860068natblock
156.146.63.x/24/2760068natblock
156.146.63.x/24/2660068natblock
156.146.63.x/24/2560068natblock
156.146.63.x/24/2460068natblock
156.146.62.x/24/2360068natblock
156.146.61.x/24/2260068natblock
156.146.59.x/24/2160068natblock
156.146.55.x/24/2060068natblock
156.146.47.x/24/1960068natblock
156.146.31.x/24/18398194natblock
156.146.127.x/24/17395658natblock
156.146.191.x/24/161448natblock
156.147.63.x/24/154668natblock
156.144.63.x/24/143743natblock
156.150.63.x/24/13UNROUTEDnatblock
156.154.63.x/24/12397233natblock
156.130.63.x/24/11UNROUTEDnatblock
156.178.63.x/24/1036992natblock
156.210.63.x/24/98452natblock
156.18.63.x/24/81945natblock

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.

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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