Test run at: 2018-05-10 19:57:55 GMT
Client Prefix (v4): 77.243.226.x/24
Client AS (v4): 25459 (NEDZONE-AS)
IPv4 Probes: 99
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 ✔ received Routable ✔ received Largest spoofable neighbor prefix length /8
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 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) Prefix
ASN of spoofed
Received 77.243.226.x/24 /31 25459 yes 77.243.226.x/24 /30 25459 yes 77.243.226.x/24 /29 25459 yes 77.243.226.x/24 /28 25459 yes 77.243.226.x/24 /27 25459 yes 77.243.226.x/24 /26 25459 yes 77.243.226.x/24 /25 25459 yes 77.243.226.x/24 /24 25459 yes 77.243.227.x/24 /23 25459 yes 77.243.224.x/24 /22 25459 yes 77.243.230.x/24 /21 25459 yes 77.243.234.x/24 /20 25459 yes 77.243.242.x/24 /19 12958 yes 77.243.194.x/24 /18 UNROUTED natblock 77.243.162.x/24 /17 20969 yes 77.243.98.x/24 /16 34602 yes 77.242.226.x/24 /15 42739 yes 77.241.226.x/24 /14 42517 yes 77.247.226.x/24 /13 43248 yes 77.251.226.x/24 /12 6830 yes 77.227.226.x/24 /11 12430 yes 77.211.226.x/24 /10 12430 yes 77.179.226.x/24 /9 6805 yes 77.115.226.x/24 /8 8374 yes
Meaning of status in Received column:
yes Packets spoofed from adjacent netblock were received yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) natblock Spoofed 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 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:
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.