Session Report
Test run at: 2023-10-03 21:00:02 GMT
Client Prefix (v4): 185.148.248.x/24
Client AS (v4): 39138 (RRBONE)
IPv4 Probes: 69
Client Prefix (v6): 2a01:a700:44xx::/40
Client AS (v6): 39138 (RRBONE)
IPv6 Probes: 60
Outbound spoofing summary (from the client to our server) Source address type IPv4 IPv6 Private - RFC1918 or ULA blocked ✔ received Routable ✔ received ✔ received Largest spoofable neighbor prefix length /8 /16
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.
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 (185.148.248.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 185.148.248.x/24 /31 39138 yes 185.148.248.x/24 /30 39138 yes 185.148.248.x/24 /29 39138 yes 185.148.248.x/24 /28 39138 yes 185.148.248.x/24 /27 39138 yes 185.148.248.x/24 /26 39138 yes 185.148.248.x/24 /25 39138 yes 185.148.248.x/24 /24 39138 yes 185.148.249.x/24 /23 39138 yes 185.148.250.x/24 /22 39138 yes 185.148.252.x/24 /21 44821 yes 185.148.240.x/24 /20 212953 yes 185.148.232.x/24 /19 202970 yes 185.148.216.x/24 /18 203972 yes 185.148.184.x/24 /17 198225 yes 185.148.120.x/24 /16 39899 yes 185.149.248.x/24 /15 202894 yes 185.150.248.x/24 /14 207073 yes 185.144.248.x/24 /13 61345 yes 185.156.248.x/24 /12 200845 yes 185.132.248.x/24 /11 199046 yes 185.180.248.x/24 /10 49776 yes 185.212.248.x/24 /9 39230 yes 185.20.248.x/24 /8 51498 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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.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 yes 2001:4978:1fb:6400::d2 2001:40b0:7500:280::5458:517a yes 2001:49aa:111:aa00::11 2001:40b0:7500:280::5458:517a yes fd11:1111:1111::1111 2001:40b0:7500:280::5458:517a yes 2001:48d0:101:501::159 2001:48d0:101:501::242 yes 2001:4978:1fb:6400::d2 2001:48d0:101:501::242 yes 2001:49aa:111:aa00::11 2001:48d0:101:501::242 yes fd11:1111:1111::1111 2001:48d0:101:501::242 yes 2001:48d0:101:501::159 2001:48d0:101:501::247 yes 2001:4978:1fb:6400::d2 2001:48d0:101:501::247 yes 2001:49aa:111:aa00::11 2001:48d0:101:501::247 yes fd11:1111:1111::1111 2001:48d0:101:501::247 yes 2001:48d0:101:501::159 2001:610:510:115:192:42:115:98 yes 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 yes 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 yes 2001:4978:1fb:6400::d2 2001:770:1c:7:225:90ff:fe0c:acb4 yes 2001:49aa:111:aa00::11 2001:770:1c:7:225:90ff:fe0c:acb4 yes fd11:1111:1111::1111 2001:770:1c:7:225:90ff:fe0c:acb4 yes
Summary:
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 2a01:a700:44xx::/40 /120 39138 yes 2a01:a700:44xx::/40 /112 39138 yes 2a01:a700:44xx::/40 /104 39138 yes 2a01:a700:44xx::/40 /96 39138 yes 2a01:a700:44xx::/40 /88 39138 yes 2a01:a700:44xx::/40 /80 39138 yes 2a01:a700:44xx::/40 /72 39138 yes 2a01:a700:44xx::/40 /64 39138 yes 2a01:a700:44xx::/40 /56 39138 yes 2a01:a700:44xx::/40 /48 39138 yes 2a01:a700:44xx::/40 /40 39138 yes 2a01:a700:c4xx::/40 /32 39138 yes 2a01:a780:44xx::/40 /24 UNROUTED yes 2a01:2700:44xx::/40 /16 3269 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)
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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