Test run at: 2021-11-30 13:21:52 GMT
Client Prefix (v4): 45.179.140.x/24
Client AS (v4): 267916
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 rewritten Routable ✔ rewritten 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 (45.179.140.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 45.179.140.x/24 /31 267916 rewritten 45.179.140.x/24 /30 267916 rewritten 45.179.140.x/24 /29 267916 rewritten 45.179.140.x/24 /28 267916 rewritten 45.179.140.x/24 /27 267916 rewritten 45.179.140.x/24 /26 267916 rewritten 45.179.140.x/24 /25 267916 rewritten 45.179.140.x/24 /24 267916 rewritten 45.179.141.x/24 /23 267916 rewritten 45.179.142.x/24 /22 267916 rewritten 45.179.136.x/24 /21 269080 rewritten 45.179.132.x/24 /20 269079 rewritten 45.179.156.x/24 /19 269097 rewritten 45.179.172.x/24 /18 269093 rewritten 45.179.204.x/24 /17 269100 rewritten 45.179.12.x/24 /16 27648 rewritten 45.178.140.x/24 /15 269026 rewritten 45.177.140.x/24 /14 266520 rewritten 45.183.140.x/24 /13 264824 rewritten 45.187.140.x/24 /12 269467 rewritten 45.163.140.x/24 /11 267686 rewritten 45.147.140.x/24 /10 UNROUTED rewritten 45.243.140.x/24 /9 24863 rewritten 45.51.140.x/24 /8 20001 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 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.