Test run at: 2020-09-02 16:01:07 GMT
Client Prefix (v4): 193.37.252.x/24
Client AS (v4): 9009 (M247)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 rewritten Routable received Largest spoofable neighbor prefix length none
Spoof status key 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 (193.37.252.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 193.37.252.x/24 /31 9009 rewritten 193.37.252.x/24 /30 9009 rewritten 193.37.252.x/24 /29 9009 rewritten 193.37.252.x/24 /28 9009 rewritten 193.37.252.x/24 /27 9009 natblock 193.37.252.x/24 /26 9009 rewritten 193.37.252.x/24 /25 9009 rewritten 193.37.252.x/24 /24 9009 rewritten 193.37.253.x/24 /23 9009 rewritten 193.37.254.x/24 /22 9009 rewritten 193.37.248.x/24 /21 UNROUTED rewritten 193.37.244.x/24 /20 786 rewritten 193.37.236.x/24 /19 UNROUTED rewritten 193.37.220.x/24 /18 4686 rewritten 193.37.188.x/24 /17 UNROUTED rewritten 193.37.124.x/24 /16 UNROUTED rewritten 193.36.252.x/24 /15 3561 rewritten 193.39.252.x/24 /14 61323 rewritten 193.33.252.x/24 /13 UNROUTED rewritten 193.45.252.x/24 /12 3301 rewritten 193.53.252.x/24 /11 44209 rewritten 193.5.252.x/24 /10 UNROUTED rewritten 193.101.252.x/24 /9 702 rewritten 193.165.252.x/24 /8 30764 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 able to spoof routable, non-adjacent source addresses through the first 10 IP hop(s).Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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