Test run at: 2017-07-14 05:41:43 GMT
Client Prefix (v4): 103.253.46.x/24
Client AS (v4): 58691 (DELTA-BD)
IPv4 Probes: 117
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 blocked Routable ✔ received Largest spoofable neighbor prefix length /11
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 (103.253.46.x/24) can spoof 2097151 neighboring addresses (within your /11 prefix)
Spoofed source address (anon) Prefix
ASN of spoofed
Received 103.253.46.x/24 /31 58691 yes 103.253.46.x/24 /30 58691 yes 103.253.46.x/24 /29 58691 yes 103.253.46.x/24 /28 58691 yes 103.253.46.x/24 /27 58691 yes 103.253.46.x/24 /26 58691 yes 103.253.46.x/24 /25 58691 yes 103.253.46.x/24 /24 58691 yes 103.253.47.x/24 /23 58691 yes 103.253.44.x/24 /22 58691 yes 103.253.42.x/24 /21 133398 yes 103.253.38.x/24 /20 133155 yes 103.253.62.x/24 /19 UNROUTED natblock 103.253.14.x/24 /18 55720 yes 103.253.110.x/24 /17 55720 yes 103.253.174.x/24 /16 132453 yes 103.252.46.x/24 /15 132563 yes 103.255.46.x/24 /14 133201 yes 103.249.46.x/24 /13 132893 yes 103.245.46.x/24 /12 7754 yes 103.237.46.x/24 /11 133296 yes 103.221.46.x/24 /10 UNROUTED natblock 103.189.46.x/24 /9 UNROUTED natblock 103.125.46.x/24 /8 UNROUTED natblock
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:
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