Session Report
Test run at: 2019-02-13 14:35:17 GMT
Client Prefix (v4): 208.184.224.x/24
Client AS (v4): 6461 (ZAYO-6461)
IPv4 Probes: 116
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 (208.184.224.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 208.184.224.x/24 /31 6461 yes 208.184.224.x/24 /30 6461 yes 208.184.224.x/24 /29 6461 yes 208.184.224.x/24 /28 6461 yes 208.184.224.x/24 /27 6461 yes 208.184.224.x/24 /26 6461 yes 208.184.224.x/24 /25 6461 yes 208.184.224.x/24 /24 6461 yes 208.184.225.x/24 /23 6461 yes 208.184.226.x/24 /22 54744 yes 208.184.228.x/24 /21 54744 yes 208.184.232.x/24 /20 6461 yes 208.184.240.x/24 /19 6461 yes 208.184.192.x/24 /18 6461 yes 208.184.160.x/24 /17 6461 yes 208.184.96.x/24 /16 6461 yes 208.185.224.x/24 /15 6461 yes 208.186.224.x/24 /14 7385 yes 208.188.224.x/24 /13 7018 yes 208.176.224.x/24 /12 2828 yes 208.168.224.x/24 /11 6639 yes 208.152.224.x/24 /10 3561 yes 208.248.224.x/24 /9 701 yes 208.56.224.x/24 /8 11022 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:
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.