Test run at: 2019-10-16 17:27:05 GMT
Client Prefix (v4): 131.196.40.x/24
Client AS (v4): 265967
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 rewritten Routable rewritten Largest spoofable neighbor prefix length none
Meaning of result status in column:
received Spoofed packet was received. ✔ Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it. rewritten Spoofed packet was received, but the source address was changed en route. blocked Spoofed packet was not received, but unspoofed packet was. unknown Neither spoofed nor unspoofed packet was received.
IPv4 Adjacent Netblock Testing:
Your host (131.196.40.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 131.196.40.x/24 /31 265967 rewritten 131.196.40.x/24 /30 265967 rewritten 131.196.40.x/24 /29 265967 rewritten 131.196.40.x/24 /28 265967 rewritten 131.196.40.x/24 /27 265967 rewritten 131.196.40.x/24 /26 265967 rewritten 131.196.40.x/24 /25 265967 rewritten 131.196.40.x/24 /24 265967 rewritten 131.196.41.x/24 /23 265967 rewritten 131.196.42.x/24 /22 265967 rewritten 131.196.44.x/24 /21 265904 rewritten 131.196.32.x/24 /20 265766 natblock 131.196.56.x/24 /19 265893 rewritten 131.196.8.x/24 /18 265632 rewritten 131.196.104.x/24 /17 265918 rewritten 131.196.168.x/24 /16 265915 rewritten 131.197.40.x/24 /15 19773 natblock 131.198.40.x/24 /14 1341 rewritten 131.192.40.x/24 /13 UNROUTED rewritten 131.204.40.x/24 /12 6112 rewritten 131.212.40.x/24 /11 217 rewritten 131.228.40.x/24 /10 UNROUTED rewritten 131.132.40.x/24 /9 74 rewritten 131.68.40.x/24 /8 138 rewritten
Meaning of status in Received column:
natblock Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address. rewritten The source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.
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:
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