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Session Report

Summary:
Test run at: 2020-08-20 01:03:32 GMT
Client Prefix (v4): 185.123.143.x/24
Client AS (v4): 9009 (M247)
IPv4 Probes: 75
Client Prefix (v6): 2a04:9dc0:xx::/40
Client AS (v6): 9009 (M247)
IPv6 Probes: 68
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
Largest spoofable neighbor prefix length nonenone
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 Adjacent Netblock Testing:

Your host (185.123.143.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.123.143.x/24/319009natblock
185.123.143.x/24/309009natblock
185.123.143.x/24/299009natblock
185.123.143.x/24/289009natblock
185.123.143.x/24/279009natblock
185.123.143.x/24/269009natblock
185.123.143.x/24/259009natblock
185.123.143.x/24/249009natblock
185.123.142.x/24/239009natblock
185.123.141.x/24/229009natblock
185.123.139.x/24/2129119natblock
185.123.135.x/24/20205709natblock
185.123.159.x/24/19204085natblock
185.123.175.x/24/1820533natblock
185.123.207.x/24/175505natblock
185.123.15.x/24/1657214natblock
185.122.143.x/24/15201341natblock
185.121.143.x/24/14203745natblock
185.127.143.x/24/13206686natblock
185.115.143.x/24/12UNROUTEDnatblock
185.107.143.x/24/1139507natblock
185.91.143.x/24/1012301natblock
185.59.143.x/24/9204238natblock
185.251.143.x/24/8UNROUTEDnatblock

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.
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a04:9dc0:xx::/40/1209009natblock
2a04:9dc0:xx::/40/1129009natblock
2a04:9dc0:xx::/40/1049009natblock
2a04:9dc0:xx::/40/969009natblock
2a04:9dc0:xx::/40/889009natblock
2a04:9dc0:xx::/40/809009natblock
2a04:9dc0:xx::/40/729009natblock
2a04:9dc0:xx::/40/649009natblock
2a04:9dc0:xx::/40/569009natblock
2a04:9dc0:xx::/40/489009natblock
2a04:9dc0:xx::/40/409009natblock
2a04:9dc0:80xx::/40/329009natblock
2a04:9d40:xx::/40/2413414natblock
2a04:1dc0:xx::/40/1644252natblock

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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