Test run at: 2020-08-21 16:09:45 GMT
Client Prefix (v4): 185.142.239.x/24
Client AS (v4): 174 (COGENT-174)
IPv4 Probes: 78
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 (185.142.239.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 185.142.239.x/24 /31 174 natblock 185.142.239.x/24 /30 174 natblock 185.142.239.x/24 /29 174 natblock 185.142.239.x/24 /28 174 natblock 185.142.239.x/24 /27 174 natblock 185.142.239.x/24 /26 174 natblock 185.142.239.x/24 /25 174 natblock 185.142.239.x/24 /24 174 natblock 185.142.238.x/24 /23 174 natblock 185.142.237.x/24 /22 42237 natblock 185.142.235.x/24 /21 206065 natblock 185.142.231.x/24 /20 203194 natblock 185.142.255.x/24 /19 201873 natblock 185.142.207.x/24 /18 UNROUTED natblock 185.142.175.x/24 /17 203180 natblock 185.142.111.x/24 /16 UNROUTED natblock 185.143.239.x/24 /15 UNROUTED natblock 185.140.239.x/24 /14 48091 natblock 185.138.239.x/24 /13 202126 natblock 185.134.239.x/24 /12 57950 natblock 185.158.239.x/24 /11 51001 natblock 185.174.239.x/24 /10 29256 natblock 185.206.239.x/24 /9 207141 natblock 185.14.239.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 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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