Test run at: 2018-11-07 20:28:40 GMT
Client Prefix (v4): 77.243.226.x/24
Client AS (v4): 25459 (NEDZONE-AS)
IPv4 Probes: 124
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 (77.243.226.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 77.243.226.x/24 /31 25459 rewritten 77.243.226.x/24 /30 25459 natblock 77.243.226.x/24 /29 25459 rewritten 77.243.226.x/24 /28 25459 rewritten 77.243.226.x/24 /27 25459 rewritten 77.243.226.x/24 /26 25459 rewritten 77.243.226.x/24 /25 25459 rewritten 77.243.226.x/24 /24 25459 rewritten 77.243.227.x/24 /23 25459 rewritten 77.243.224.x/24 /22 25459 rewritten 77.243.230.x/24 /21 25459 rewritten 77.243.234.x/24 /20 25459 rewritten 77.243.242.x/24 /19 12958 rewritten 77.243.194.x/24 /18 UNROUTED rewritten 77.243.162.x/24 /17 20969 rewritten 77.243.98.x/24 /16 34602 rewritten 77.242.226.x/24 /15 42739 rewritten 77.241.226.x/24 /14 42517 rewritten 77.247.226.x/24 /13 43248 rewritten 77.251.226.x/24 /12 6830 rewritten 77.227.226.x/24 /11 12430 rewritten 77.211.226.x/24 /10 12430 rewritten 77.179.226.x/24 /9 6805 rewritten 77.115.226.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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