Session Report
Test run at: 2016-05-26 00:49:17 GMT
Client Prefix (v4): 177.39.131.x/24
Client AS (v4): 262426
IPv4 Probes: 89
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 ✔ received Routable ✔ received Largest spoofable neighbor prefix length /8
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:
- ⚠️ Your host is behind a Network Address Translation (NAT) router or firewall but spoofed packets are still being received without modification. See here for more information.
IPv4 Adjacent Netblock Testing:
Your host (177.39.131.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 177.39.131.x/24 /31 262426 yes 177.39.131.x/24 /30 262426 yes 177.39.131.x/24 /29 262426 yes 177.39.131.x/24 /28 262426 yes 177.39.131.x/24 /27 262426 yes 177.39.131.x/24 /26 262426 yes 177.39.131.x/24 /25 262426 yes 177.39.131.x/24 /24 262426 yes 177.39.130.x/24 /23 262426 yes 177.39.129.x/24 /22 262426 yes 177.39.135.x/24 /21 52767 yes 177.39.139.x/24 /20 262430 yes 177.39.147.x/24 /19 262427 yes 177.39.163.x/24 /18 262429 yes 177.39.195.x/24 /17 262432 yes 177.39.3.x/24 /16 262413 yes 177.38.131.x/24 /15 61570 yes 177.37.131.x/24 /14 28126 yes 177.35.131.x/24 /13 28573 yes 177.47.131.x/24 /12 52993 yes 177.55.131.x/24 /11 53003 yes 177.7.131.x/24 /10 8167 yes 177.103.131.x/24 /9 27699 yes 177.167.131.x/24 /8 26615 yes Meaning of status in Received column:
yes Packets spoofed from adjacent netblock were received yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
IPv4 Outbound Filtering Depth:
The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 5 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.