Test run at: 2019-03-16 14:21:18 GMT
Client Prefix (v4): 177.101.55.x/24
Client AS (v4): 264016
IPv4 Probes: 116
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 rewritten Routable ✔ received 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 (177.101.55.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 177.101.55.x/24 /31 264016 rewritten 177.101.55.x/24 /30 264016 rewritten 177.101.55.x/24 /29 264016 rewritten 177.101.55.x/24 /28 264016 rewritten 177.101.55.x/24 /27 264016 rewritten 177.101.55.x/24 /26 264016 rewritten 177.101.55.x/24 /25 264016 rewritten 177.101.55.x/24 /24 264016 rewritten 177.101.54.x/24 /23 264016 rewritten 177.101.53.x/24 /22 264016 rewritten 177.101.51.x/24 /21 264016 rewritten 177.101.63.x/24 /20 264016 rewritten 177.101.39.x/24 /19 262606 rewritten 177.101.23.x/24 /18 53046 rewritten 177.101.119.x/24 /17 28343 rewritten 177.101.183.x/24 /16 262668 rewritten 177.100.55.x/24 /15 28573 rewritten 177.103.55.x/24 /14 27699 rewritten 177.97.55.x/24 /13 18881 rewritten 177.109.55.x/24 /12 26615 rewritten 177.117.55.x/24 /11 26599 rewritten 177.69.55.x/24 /10 16735 rewritten 177.37.55.x/24 /9 52893 rewritten 177.229.55.x/24 /8 13999 rewritten
Meaning of status in Received column:
rewritten The source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.
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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