Test run at: 2021-11-08 16:25:06 GMT
Client Prefix (v4): 172.250.66.x/24
Client AS (v4): 20001 (TWC-20001-PACWEST)
IPv4 Probes: 66
Client Prefix (v6): 2603:8001:95xx::/40
Client AS (v6): 20001 (TWC-20001-PACWEST)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server) Source address type IPv4 IPv6 Private - RFC1918 or ULA unknown unknown Routable unknown unknown Largest spoofable neighbor prefix length none none
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:
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 (172.250.66.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 172.250.66.x/24 /31 20001 sendto 172.250.66.x/24 /30 20001 sendto 172.250.66.x/24 /29 20001 sendto 172.250.66.x/24 /28 20001 sendto 172.250.66.x/24 /27 20001 sendto 172.250.66.x/24 /26 20001 sendto 172.250.66.x/24 /25 20001 sendto 172.250.66.x/24 /24 20001 sendto 172.250.67.x/24 /23 20001 sendto 172.250.64.x/24 /22 20001 sendto 172.250.70.x/24 /21 20001 sendto 172.250.74.x/24 /20 20001 sendto 172.250.82.x/24 /19 20001 sendto 172.250.98.x/24 /18 20001 sendto 172.250.2.x/24 /17 20001 sendto 172.250.194.x/24 /16 20001 sendto 172.251.66.x/24 /15 20001 sendto 172.248.66.x/24 /14 20001 sendto 172.254.66.x/24 /13 12271 sendto 172.242.66.x/24 /12 7155 sendto 172.234.66.x/24 /11 20940 sendto 172.218.66.x/24 /10 852 sendto 172.186.66.x/24 /9 10310 sendto 172.122.66.x/24 /8 2497 sendto Meaning of status in Received column:
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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.IPv6 probes:
IPv6 Adjacent Netblock Testing:
Spoofed source address Destination Received 2001:48d0:101:501::159 2001:48d0:101:501::242 no 2001:4978:1fb:6400::d2 2001:48d0:101:501::242 no 2001:49aa:111:aa00::11 2001:48d0:101:501::242 no fd11:1111:1111::1111 2001:48d0:101:501::242 no 2001:48d0:101:501::159 2001:48d0:101:501::247 no 2001:4978:1fb:6400::d2 2001:48d0:101:501::247 no 2001:49aa:111:aa00::11 2001:48d0:101:501::247 no fd11:1111:1111::1111 2001:48d0:101:501::247 no 2001:48d0:101:501::159 2001:610:510:115:192:42:115:98 no 2001:4978:1fb:6400::d2 2001:610:510:115:192:42:115:98 no 2001:49aa:111:aa00::11 2001:610:510:115:192:42:115:98 no fd11:1111:1111::1111 2001:610:510:115:192:42:115:98 no 2001:48d0:101:501::159 2001:630:212:225:225:90ff:fe0c:45a6 no 2001:4978:1fb:6400::d2 2001:630:212:225:225:90ff:fe0c:45a6 no 2001:49aa:111:aa00::11 2001:630:212:225:225:90ff:fe0c:45a6 no fd11:1111:1111::1111 2001:630:212:225:225:90ff:fe0c:45a6 no 2001:48d0:101:501::159 2001:770:1c:7:225:90ff:fe0c:acb4 no 2001:4978:1fb:6400::d2 2001:770:1c:7:225:90ff:fe0c:acb4 no 2001:49aa:111:aa00::11 2001:770:1c:7:225:90ff:fe0c:acb4 no fd11:1111:1111::1111 2001:770:1c:7:225:90ff:fe0c:acb4 no
Summary:
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 2603:8001:95xx::/40 /120 20001 sendto 2603:8001:95xx::/40 /112 20001 sendto 2603:8001:95xx::/40 /104 20001 sendto 2603:8001:95xx::/40 /96 20001 sendto 2603:8001:95xx::/40 /88 20001 sendto 2603:8001:95xx::/40 /80 20001 sendto 2603:8001:95xx::/40 /72 20001 sendto 2603:8001:95xx::/40 /64 20001 sendto 2603:8001:95xx::/40 /56 20001 sendto 2603:8001:95xx::/40 /48 20001 sendto 2603:8001:95xx::/40 /40 20001 sendto 2603:8001:15xx::/40 /32 20001 sendto 2603:8081:95xx::/40 /24 11427 sendto 2603:1:95xx::/40 /16 UNROUTED sendto Meaning of status in Received column:
sendto The spoofer client was unable to send spoofed headers due to an operating system restriction.
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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