Test run at: 2023-11-06 01:33:19 GMT
Client Prefix (v4): 191.253.18.x/24
Client AS (v4): 262773
IPv4 Probes: 69
Client Prefix (v6): 2804:9f8:40xx::/40
Client AS (v6): 262773
IPv6 Probes: 60
Outbound spoofing summary (from the client to our server) Source address type IPv4 IPv6 Private - RFC1918 or ULA rewritten blocked Routable rewritten blocked Largest spoofable neighbor prefix length none /64
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 (191.253.18.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 191.253.18.x/24 /31 262773 rewritten 191.253.18.x/24 /30 262773 rewritten 191.253.18.x/24 /29 262773 rewritten 191.253.18.x/24 /28 262773 rewritten 191.253.18.x/24 /27 262773 rewritten 191.253.18.x/24 /26 262773 rewritten 191.253.18.x/24 /25 262773 rewritten 191.253.18.x/24 /24 262773 rewritten 191.253.19.x/24 /23 262773 rewritten 191.253.16.x/24 /22 262773 rewritten 191.253.22.x/24 /21 263526 rewritten 191.253.26.x/24 /20 263524 rewritten 191.253.2.x/24 /19 53080 rewritten 191.253.50.x/24 /18 272539 rewritten 191.253.82.x/24 /17 52768 rewritten 191.253.146.x/24 /16 UNROUTED rewritten 191.252.18.x/24 /15 27715 rewritten 191.255.18.x/24 /14 27699 rewritten 191.249.18.x/24 /13 18881 rewritten 191.245.18.x/24 /12 22085 rewritten 191.237.18.x/24 /11 8075 rewritten 191.221.18.x/24 /10 8167 rewritten 191.189.18.x/24 /9 28573 rewritten 191.125.18.x/24 /8 7418 rewritten Meaning of status in Received column:
rewritten The source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.
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 2001:48d0:101:501::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 2804:9f8:40xx::/40 /120 262773 yes 2804:9f8:40xx::/40 /112 262773 yes 2804:9f8:40xx::/40 /104 262773 yes 2804:9f8:40xx::/40 /96 262773 yes 2804:9f8:40xx::/40 /88 262773 yes 2804:9f8:40xx::/40 /80 262773 yes 2804:9f8:40xx::/40 /72 262773 yes 2804:9f8:40xx::/40 /64 262773 yes 2804:9f8:40xx::/40 /56 262773 no 2804:9f8:40xx::/40 /48 262773 no 2804:9f8:40xx::/40 /40 262773 no 2804:9f8:c0xx::/40 /32 262773 no 2804:978:40xx::/40 /24 263087 no 2804:89f8:40xx::/40 /16 273638 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:
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.