Session Report
Test run at: 2023-05-03 21:02:43 GMTIPv4 AS Route:
Client Prefix (v4): 38.51.155.x/24
Client AS (v4): 272142
IPv4 Probes: 60
Client Prefix (v6): 2803:9090:81xx::/40
Client AS (v6): 272142
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server) Source address type IPv4 IPv6 Private - RFC1918 or ULA blocked ✔ blocked Routable blocked ✔ blocked Largest spoofable neighbor prefix length /23 /32
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.
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 (38.51.155.x/24) can spoof 511 neighboring addresses (within your /23 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 38.51.155.x/24 /31 272142 yes 38.51.155.x/24 /30 272142 yes 38.51.155.x/24 /29 272142 yes 38.51.155.x/24 /28 272142 yes 38.51.155.x/24 /27 272142 yes 38.51.155.x/24 /26 272142 yes 38.51.155.x/24 /25 272142 yes 38.51.155.x/24 /24 272142 yes 38.51.154.x/24 /23 272142 yes 38.51.153.x/24 /22 32098 natblock 38.51.159.x/24 /21 272809 natblock 38.51.147.x/24 /20 400337 natblock 38.51.139.x/24 /19 263558 natblock 38.51.187.x/24 /18 272896 natblock 38.51.219.x/24 /17 269730 natblock 38.51.27.x/24 /16 33139 natblock 38.50.155.x/24 /15 266539 natblock 38.49.155.x/24 /14 174 natblock 38.55.155.x/24 /13 54600 natblock 38.59.155.x/24 /12 19021 natblock 38.35.155.x/24 /11 174 natblock 38.19.155.x/24 /10 174 natblock 38.115.155.x/24 /9 174 natblock 38.179.155.x/24 /8 174 natblock Meaning of status in Received column:
yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) natblock Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
IPv4 Outbound Filtering Depth:
The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 6 IP hop(s).IPv6 AS Route:
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.IPv6 probes:
IPv6 Adjacent Netblock Testing:
Spoofed source address Destination Received 2001:48d0:101:501::159 2001:40b0:7500:280::5458:517a no 2001:4978:1fb:6400::d2 2001:40b0:7500:280::5458:517a no 2001:49aa:111:aa00::11 2001:40b0:7500:280::5458:517a no fd11:1111:1111::1111 2001:40b0:7500:280::5458:517a no 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 2803:9090:81xx::/40 /120 272142 yes 2803:9090:81xx::/40 /112 272142 yes 2803:9090:81xx::/40 /104 272142 yes 2803:9090:81xx::/40 /96 272142 yes 2803:9090:81xx::/40 /88 272142 yes 2803:9090:81xx::/40 /80 272142 yes 2803:9090:81xx::/40 /72 272142 yes 2803:9090:81xx::/40 /64 272142 yes 2803:9090:81xx::/40 /56 272142 yes 2803:9090:81xx::/40 /48 272142 yes 2803:9090:81xx::/40 /40 272142 yes 2803:9090:1xx::/40 /32 272142 yes 2803:9010:81xx::/40 /24 UNROUTED no 2803:1090:81xx::/40 /16 UNROUTED no Meaning of status in Received column:
no Packets spoofed from adjacent netblock were not received, probably due to blocking yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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