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Session Report

Summary:
Test run at: 2017-09-25 12:32:06 GMT
Client Prefix (v4): 188.37.23.x/24
Client AS (v4): 12353 (VODAFONE-PT)
IPv4 Probes: 131
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 (188.37.23.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
188.37.23.x/24/3112353natblock
188.37.23.x/24/3012353natblock
188.37.23.x/24/2912353natblock
188.37.23.x/24/2812353natblock
188.37.23.x/24/2712353natblock
188.37.23.x/24/2612353natblock
188.37.23.x/24/2512353natblock
188.37.23.x/24/2412353natblock
188.37.22.x/24/2312353natblock
188.37.21.x/24/2212353natblock
188.37.19.x/24/2112353natblock
188.37.31.x/24/2012353natblock
188.37.7.x/24/1912353natblock
188.37.55.x/24/1812353natblock
188.37.87.x/24/1712353natblock
188.37.151.x/24/1612353natblock
188.36.23.x/24/155483natblock
188.39.23.x/24/148468natblock
188.33.23.x/24/13201019natblock
188.45.23.x/24/128447natblock
188.53.23.x/24/1125019natblock
188.5.23.x/24/105432natblock
188.101.23.x/24/93209natblock
188.165.23.x/24/816276natblock

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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