Session Report
Test run at: 2021-02-27 16:33:52 GMT
Client Prefix (v4): 91.219.236.x/24
Client AS (v4): 56322 (ServerAstra-AS)
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 blocked 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 (91.219.236.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 91.219.236.x/24 /31 56322 yes 91.219.236.x/24 /30 56322 yes 91.219.236.x/24 /29 56322 yes 91.219.236.x/24 /28 56322 yes 91.219.236.x/24 /27 56322 yes 91.219.236.x/24 /26 56322 yes 91.219.236.x/24 /25 56322 yes 91.219.236.x/24 /24 56322 yes 91.219.237.x/24 /23 56322 yes 91.219.238.x/24 /22 56322 yes 91.219.232.x/24 /21 41161 yes 91.219.228.x/24 /20 15673 yes 91.219.252.x/24 /19 48230 yes 91.219.204.x/24 /18 51715 yes 91.219.172.x/24 /17 51726 yes 91.219.108.x/24 /16 39647 yes 91.218.236.x/24 /15 209574 yes 91.217.236.x/24 /14 48806 yes 91.223.236.x/24 /13 47959 yes 91.211.236.x/24 /12 48758 yes 91.203.236.x/24 /11 13296 yes 91.251.236.x/24 /10 197207 yes 91.155.236.x/24 /9 719 yes 91.91.236.x/24 /8 35238 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 9 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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