Session Report
Test run at: 2018-06-10 17:45:29 GMT
Client Prefix (v4): 184.7.173.x/24
Client AS (v4): 17402 (CENTURYLINK-LEGACY-EMBARQ-CHSK)
IPv4 Probes: 99
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 (184.7.173.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 184.7.173.x/24 /31 17402 yes 184.7.173.x/24 /30 17402 yes 184.7.173.x/24 /29 17402 yes 184.7.173.x/24 /28 17402 yes 184.7.173.x/24 /27 17402 yes 184.7.173.x/24 /26 17402 yes 184.7.173.x/24 /25 17402 yes 184.7.173.x/24 /24 17402 yes 184.7.172.x/24 /23 17402 yes 184.7.175.x/24 /22 17402 yes 184.7.169.x/24 /21 17402 yes 184.7.165.x/24 /20 17402 yes 184.7.189.x/24 /19 209 yes 184.7.141.x/24 /18 4282 yes 184.7.237.x/24 /17 209 yes 184.7.45.x/24 /16 209 yes 184.6.173.x/24 /15 209 yes 184.5.173.x/24 /14 209 yes 184.3.173.x/24 /13 209 yes 184.15.173.x/24 /12 5650 yes 184.23.173.x/24 /11 UNROUTED yes 184.39.173.x/24 /10 7018 yes 184.71.173.x/24 /9 6327 yes 184.135.173.x/24 /8 UNROUTED 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 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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