Session Report
Test run at: 2020-01-29 17:38:51 GMT
Client Prefix (v4): 104.37.174.x/24
Client AS (v4): 396073 (MAJESTIC-HOSTING-01)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 unknown Routable unknown Largest spoofable neighbor prefix length /22
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:
- ⚠️ The spoofer client was unable to send spoofed headers due to an operating system restriction.
IPv4 Adjacent Netblock Testing:
Your host (104.37.174.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 104.37.174.x/24 /31 396073 yes 104.37.174.x/24 /30 396073 yes 104.37.174.x/24 /29 396073 yes 104.37.174.x/24 /28 396073 yes 104.37.174.x/24 /27 396073 yes 104.37.174.x/24 /26 396073 yes 104.37.174.x/24 /25 396073 yes 104.37.174.x/24 /24 396073 yes 104.37.175.x/24 /23 396073 yes 104.37.172.x/24 /22 396073 yes 104.37.170.x/24 /21 62838 sendto 104.37.166.x/24 /20 393442 sendto 104.37.190.x/24 /19 19318 sendto 104.37.142.x/24 /18 53282 sendto 104.37.238.x/24 /17 21748 sendto 104.37.46.x/24 /16 UNROUTED sendto 104.36.174.x/24 /15 397545 sendto 104.39.174.x/24 /14 3999 sendto 104.33.174.x/24 /13 20001 sendto 104.45.174.x/24 /12 8075 sendto 104.53.174.x/24 /11 7018 sendto 104.5.174.x/24 /10 7018 sendto 104.101.174.x/24 /9 UNROUTED sendto 104.165.174.x/24 /8 18779 sendto Meaning of status in Received column:
yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) sendto The spoofer client was unable to send spoofed headers due to an operating system restriction.
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:
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