Test run at: 2019-11-06 19:23:04 GMT
Client Prefix (v4): 103.239.253.x/24
Client AS (v4): 63526 (SSDTL-BD)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 unknown Routable unknown 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.
IPv4 Adjacent Netblock Testing:
Your host (103.239.253.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 103.239.253.x/24 /31 63526 natblock 103.239.253.x/24 /30 63526 natblock 103.239.253.x/24 /29 63526 natblock 103.239.253.x/24 /28 63526 natblock 103.239.253.x/24 /27 63526 natblock 103.239.253.x/24 /26 63526 natblock 103.239.253.x/24 /25 63526 natblock 103.239.253.x/24 /24 63526 natblock 103.239.252.x/24 /23 63526 natblock 103.239.255.x/24 /22 63526 natblock 103.239.249.x/24 /21 UNROUTED natblock 103.239.245.x/24 /20 4837 natblock 103.239.237.x/24 /19 UNROUTED natblock 103.239.221.x/24 /18 64010 natblock 103.239.189.x/24 /17 23693 natblock 103.239.125.x/24 /16 133262 natblock 103.238.253.x/24 /15 24137 natblock 103.237.253.x/24 /14 4808 natblock 103.235.253.x/24 /13 23724 natblock 103.231.253.x/24 /12 133380 natblock 103.255.253.x/24 /11 UNROUTED natblock 103.207.253.x/24 /10 UNROUTED natblock 103.175.253.x/24 /9 UNROUTED natblock 103.111.253.x/24 /8 UNROUTED natblock
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.
IPv4 Outbound Filtering Depth:
The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 9 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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