Test run at: 2019-10-29 12:37:11 GMT
Client Prefix (v4): 200.142.185.x/24
Client AS (v4): 53049
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
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 (200.142.185.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 200.142.185.x/24 /31 53049 natblock 200.142.185.x/24 /30 53049 natblock 200.142.185.x/24 /29 53049 natblock 200.142.185.x/24 /28 53049 natblock 200.142.185.x/24 /27 53049 natblock 200.142.185.x/24 /26 53049 natblock 200.142.185.x/24 /25 53049 natblock 200.142.185.x/24 /24 53049 natblock 200.142.184.x/24 /23 53049 natblock 200.142.187.x/24 /22 53049 natblock 200.142.189.x/24 /21 61950 natblock 200.142.177.x/24 /20 61949 natblock 200.142.169.x/24 /19 26104 natblock 200.142.153.x/24 /18 28591 natblock 200.142.249.x/24 /17 14204 natblock 200.142.57.x/24 /16 26118 natblock 200.143.185.x/24 /15 16397 natblock 200.140.185.x/24 /14 8167 natblock 200.138.185.x/24 /13 8167 natblock 200.134.185.x/24 /12 10881 natblock 200.158.185.x/24 /11 27699 natblock 200.174.185.x/24 /10 4230 natblock 200.206.185.x/24 /9 27699 natblock 200.14.185.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 1 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.