Session Report
Test run at: 2022-04-20 08:18:40 GMT
Client Prefix (v4): 192.166.33.x/24
Client AS (v4): 50661 (TELKABSPZOO-AS)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 rewritten Routable received Largest spoofable neighbor prefix length /10
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 which rewrites the source addresses of the test traffic. To test your provider's network further, you must remove the NAT/firewall/router and connect directly.
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.
IPv4 Adjacent Netblock Testing:
Your host (192.166.33.x/24) can spoof 4194303 neighboring addresses (within your /10 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 192.166.33.x/24 /31 50661 no 192.166.33.x/24 /30 50661 yes 192.166.33.x/24 /29 50661 yes 192.166.33.x/24 /28 50661 yes 192.166.33.x/24 /27 50661 no 192.166.33.x/24 /26 50661 no 192.166.33.x/24 /25 50661 yes 192.166.33.x/24 /24 50661 yes 192.166.32.x/24 /23 50661 yes 192.166.35.x/24 /22 50661 no 192.166.37.x/24 /21 210247 yes 192.166.41.x/24 /20 13101 no 192.166.49.x/24 /19 UNROUTED no 192.166.1.x/24 /18 8881 yes 192.166.97.x/24 /17 51088 no 192.166.161.x/24 /16 9007 yes 192.167.33.x/24 /15 137 no 192.164.33.x/24 /14 8447 no 192.162.33.x/24 /13 49827 yes 192.174.33.x/24 /12 16411 no 192.182.33.x/24 /11 5650 no 192.134.33.x/24 /10 2200 yes 192.230.33.x/24 /9 UNROUTED no 192.38.33.x/24 /8 1835 no Meaning of status in Received column:
no Packets spoofed from adjacent netblock were not received, probably due to blocking 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 10 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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