Test run at: 2018-11-30 14:51:15 GMT
Client Prefix (v4): 69.28.32.x/24
Client AS (v4): 31857 (PTERA)
IPv4 Probes: 124
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 blocked Routable received Largest spoofable neighbor prefix length /20
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 (69.28.32.x/24) can spoof 4095 neighboring addresses (within your /20 prefix)
Spoofed source address (anon) Prefix
ASN of spoofed
Received 69.28.32.x/24 /31 31857 yes 69.28.32.x/24 /30 31857 yes 69.28.32.x/24 /29 31857 yes 69.28.32.x/24 /28 31857 yes 69.28.32.x/24 /27 31857 yes 69.28.32.x/24 /26 31857 yes 69.28.32.x/24 /25 31857 yes 69.28.32.x/24 /24 31857 yes 69.28.33.x/24 /23 31857 yes 69.28.34.x/24 /22 31857 yes 69.28.36.x/24 /21 31857 yes 69.28.40.x/24 /20 31857 yes 69.28.48.x/24 /19 21859 natblock 69.28.0.x/24 /18 7268 natblock 69.28.96.x/24 /17 32035 natblock 69.28.160.x/24 /16 22822 natblock 69.29.32.x/24 /15 22561 natblock 69.30.32.x/24 /14 6423 natblock 69.24.32.x/24 /13 26410 natblock 69.20.32.x/24 /12 27357 natblock 69.12.32.x/24 /11 30028 natblock 69.60.32.x/24 /10 7086 natblock 69.92.32.x/24 /9 11492 natblock 69.156.32.x/24 /8 577 natblock
Meaning of status in Received column:
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 4 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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