Session Report
Test run at: 2021-05-29 19:16:29 GMT
Client Prefix (v4): 158.51.125.x/24
Client AS (v4): 20150 (ANYNODE)
IPv4 Probes: 66
Client Prefix (v6): 2604:4cc0:xx::/40
Client AS (v6): 20150 (ANYNODE)
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 (158.51.125.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 158.51.125.x/24 /31 20150 yes 158.51.125.x/24 /30 20150 yes 158.51.125.x/24 /29 20150 yes 158.51.125.x/24 /28 20150 yes 158.51.125.x/24 /27 20150 yes 158.51.125.x/24 /26 20150 yes 158.51.125.x/24 /25 20150 yes 158.51.125.x/24 /24 20150 yes 158.51.124.x/24 /23 20150 no 158.51.127.x/24 /22 20150 no 158.51.121.x/24 /21 62563 no 158.51.117.x/24 /20 20220 no 158.51.109.x/24 /19 54600 no 158.51.93.x/24 /18 399203 no 158.51.61.x/24 /17 47002 no 158.51.253.x/24 /16 53812 no 158.50.125.x/24 /15 UNROUTED no 158.49.125.x/24 /14 766 no 158.55.125.x/24 /13 UNROUTED no 158.59.125.x/24 /12 25807 no 158.35.125.x/24 /11 7018 no 158.19.125.x/24 /10 1600 no 158.115.125.x/24 /9 UNROUTED no 158.179.125.x/24 /8 39550 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 able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).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 no 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 no 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 no 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 yes 2001:49aa:111:aa00::11 2001:df0:4:800:21c:c0ff:feb2:ad5f yes fd11:1111:1111::1111 2001:df0:4:800:21c:c0ff:feb2:ad5f yes
Summary:
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 2604:4cc0:xx::/40 /120 20150 yes 2604:4cc0:xx::/40 /112 20150 yes 2604:4cc0:xx::/40 /104 20150 yes 2604:4cc0:xx::/40 /96 20150 yes 2604:4cc0:xx::/40 /88 20150 yes 2604:4cc0:xx::/40 /80 20150 yes 2604:4cc0:xx::/40 /72 20150 yes 2604:4cc0:xx::/40 /64 20150 yes 2604:4cc0:xx::/40 /56 20150 yes 2604:4cc0:xx::/40 /48 20150 yes 2604:4cc0:xx::/40 /40 20150 yes 2604:4cc0:80xx::/40 /32 20150 yes 2604:4c40:xx::/40 /24 395555 yes 2604:ccc0:xx::/40 /16 46506 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:
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.