Test run at: 2020-04-13 02:11:12 GMT
Client Prefix (v4): 121.36.8.x/24
Client AS (v4): 55990 (HWCSNET)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 rewritten Routable blocked 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.
Warnings:
IPv4 Adjacent Netblock Testing:
Your host (121.36.8.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 121.36.8.x/24 /31 55990 natblock 121.36.8.x/24 /30 55990 natblock 121.36.8.x/24 /29 55990 natblock 121.36.8.x/24 /28 55990 natblock 121.36.8.x/24 /27 55990 natblock 121.36.8.x/24 /26 55990 natblock 121.36.8.x/24 /25 55990 natblock 121.36.8.x/24 /24 55990 natblock 121.36.9.x/24 /23 55990 natblock 121.36.10.x/24 /22 55990 natblock 121.36.12.x/24 /21 55990 natblock 121.36.0.x/24 /20 55990 natblock 121.36.24.x/24 /19 55990 natblock 121.36.40.x/24 /18 55990 natblock 121.36.72.x/24 /17 55990 natblock 121.36.136.x/24 /16 55990 natblock 121.37.8.x/24 /15 55990 natblock 121.38.8.x/24 /14 UNROUTED natblock 121.32.8.x/24 /13 4134 natblock 121.44.8.x/24 /12 7545 natblock 121.52.8.x/24 /11 UNROUTED natblock 121.4.8.x/24 /10 UNROUTED natblock 121.100.8.x/24 /9 23776 natblock 121.164.8.x/24 /8 4766 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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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