Session Report
Test run at: 2021-06-07 14:44:38 GMT
Client Prefix (v4): 185.216.213.x/24
Client AS (v4): 213251 (de-srv-2-mnt)
IPv4 Probes: 66
Client Prefix (v6): 2a0b:bbc0:31xx::/40
Client AS (v6): 213251 (de-srv-2-mnt)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server) Source address type IPv4 IPv6 Private - RFC1918 or ULA blocked received Routable blocked received Largest spoofable neighbor prefix length /24 /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.
IPv4 Adjacent Netblock Testing:
Your host (185.216.213.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 185.216.213.x/24 /31 213251 yes 185.216.213.x/24 /30 213251 yes 185.216.213.x/24 /29 213251 yes 185.216.213.x/24 /28 213251 yes 185.216.213.x/24 /27 213251 yes 185.216.213.x/24 /26 213251 yes 185.216.213.x/24 /25 213251 yes 185.216.213.x/24 /24 213251 yes 185.216.212.x/24 /23 205388 no 185.216.215.x/24 /22 205388 no 185.216.209.x/24 /21 15440 no 185.216.221.x/24 /20 42000 no 185.216.197.x/24 /19 29256 no 185.216.245.x/24 /18 41338 no 185.216.149.x/24 /17 UNROUTED no 185.216.85.x/24 /16 2856 no 185.217.213.x/24 /15 UNROUTED no 185.218.213.x/24 /14 35625 no 185.220.213.x/24 /13 30925 no 185.208.213.x/24 /12 47527 no 185.200.213.x/24 /11 21183 no 185.248.213.x/24 /10 15967 no 185.152.213.x/24 /9 51815 no 185.88.213.x/24 /8 47447 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)
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 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 2001:48d0:101:501::159 2001:df0:4:800:21c:c0ff:feb2:ad5f yes 2001:4978:1fb:6400::d2 2001:df0:4:800:21c:c0ff:feb2:ad5f no 2001:49aa:111:aa00::11 2001:df0:4:800:21c:c0ff:feb2:ad5f no fd11:1111:1111::1111 2001:df0:4:800:21c:c0ff:feb2:ad5f no
Summary:
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 2a0b:bbc0:31xx::/40 /120 213251 yes 2a0b:bbc0:31xx::/40 /112 213251 yes 2a0b:bbc0:31xx::/40 /104 213251 yes 2a0b:bbc0:31xx::/40 /96 213251 yes 2a0b:bbc0:31xx::/40 /88 213251 yes 2a0b:bbc0:31xx::/40 /80 213251 yes 2a0b:bbc0:31xx::/40 /72 213251 yes 2a0b:bbc0:31xx::/40 /64 213251 yes 2a0b:bbc0:31xx::/40 /56 213251 yes 2a0b:bbc0:31xx::/40 /48 213251 yes 2a0b:bbc0:31xx::/40 /40 213251 yes 2a0b:bbc0:b1xx::/40 /32 UNROUTED yes 2a0b:bb40:31xx::/40 /24 28725 yes 2a0b:3bc0:31xx::/40 /16 UNROUTED 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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