Test run at: 2020-09-02 15:39:34 GMT
Client Prefix (v4): 77.243.191.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 rewritten 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.
Warnings:
IPv4 Adjacent Netblock Testing:
Your host (77.243.191.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 77.243.191.x/24 /31 9009 rewritten 77.243.191.x/24 /30 9009 natblock 77.243.191.x/24 /29 9009 rewritten 77.243.191.x/24 /28 9009 rewritten 77.243.191.x/24 /27 9009 rewritten 77.243.191.x/24 /26 9009 rewritten 77.243.191.x/24 /25 9009 rewritten 77.243.191.x/24 /24 9009 rewritten 77.243.190.x/24 /23 9009 natblock 77.243.189.x/24 /22 9009 rewritten 77.243.187.x/24 /21 9009 rewritten 77.243.183.x/24 /20 9009 rewritten 77.243.175.x/24 /19 20969 rewritten 77.243.159.x/24 /18 UNROUTED rewritten 77.243.255.x/24 /17 12958 rewritten 77.243.63.x/24 /16 42697 rewritten 77.242.191.x/24 /15 42669 rewritten 77.241.191.x/24 /14 20799 rewritten 77.247.191.x/24 /13 8595 rewritten 77.251.191.x/24 /12 6830 rewritten 77.227.191.x/24 /11 12430 rewritten 77.211.191.x/24 /10 12430 rewritten 77.179.191.x/24 /9 6805 rewritten 77.115.191.x/24 /8 8374 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 1 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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