Test run at: 2016-02-10 01:10:23 GMTIPv4 AS Route:
Client Prefix (v4): 199.187.221.x/24
Client AS (v4): 19230 (NANOG)
IPv4 Probes: 87
Client Prefix (v6): 2620:0:cxx::/40
Client AS (v6): 19230 (NANOG)
IPv6 Probes: 59
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 /21 none
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 (199.187.221.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)
Spoofed source address (anon) Prefix
ASN of spoofed
Received 199.187.221.x/24 /31 19230 yes 199.187.221.x/24 /30 19230 yes 199.187.221.x/24 /29 19230 yes 199.187.221.x/24 /28 19230 yes 199.187.221.x/24 /27 19230 yes 199.187.221.x/24 /26 19230 yes 199.187.221.x/24 /25 19230 yes 199.187.221.x/24 /24 19230 yes 199.187.220.x/24 /23 19230 yes 199.187.223.x/24 /22 19230 yes 199.187.217.x/24 /21 19230 yes 199.187.213.x/24 /20 14185 no 199.187.205.x/24 /19 19331 no 199.187.253.x/24 /18 19201 no 199.187.157.x/24 /17 11641 no 199.187.93.x/24 /16 UNROUTED no 199.186.221.x/24 /15 7018 no 199.185.221.x/24 /14 852 no 199.191.221.x/24 /13 UNROUTED no 199.179.221.x/24 /12 UNROUTED no 199.171.221.x/24 /11 701 no 199.155.221.x/24 /10 4152 no 199.251.221.x/24 /9 721 no 199.59.221.x/24 /8 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)
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:
Spoofed source address Destination Received 2001:4978:1fb:6400::d2 2001:388:1:5001:21c:c0ff:fea2:4a3a no 2001:49aa:111:aa00::11 2001:388:1:5001:21c:c0ff:fea2:4a3a no fe80:1111::11 2001:388:1:5001:21c:c0ff:fea2:4a3a no 2001:4978:1fb:6400::d2 2001:410:102:1::78 no 2001:49aa:111:aa00::11 2001:410:102:1::78 no fe80:1111::11 2001:410:102:1::78 no 2001:4978:1fb:6400::d2 2001:410:90ff::5 no 2001:49aa:111:aa00::11 2001:410:90ff::5 no fe80:1111::11 2001:410:90ff::5 no 2001:4978:1fb:6400::d2 2001:468:d01:103::80df:9d08 no 2001:49aa:111:aa00::11 2001:468:d01:103::80df:9d08 no fe80:1111::11 2001:468:d01:103::80df:9d08 no 2001:4978:1fb:6400::d2 2001:48d0:101:501::247 no 2001:49aa:111:aa00::11 2001:48d0:101:501::247 no fe80:1111::11 2001:48d0:101:501::247 no 2001:4978:1fb:6400::d2 2001:500:4:12::140 no 2001:49aa:111:aa00::11 2001:500:4:12::140 no fe80:1111::11 2001:500:4:12::140 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 fe80:1111::11 2001:610:510:115:192:42:115:98 no 2001:4978:1fb:6400::d2 2001:708:40:2001:21c:c0ff:fea2:4c5c no 2001:49aa:111:aa00::11 2001:708:40:2001:21c:c0ff:fea2:4c5c no fe80:1111::11 2001:708:40:2001:21c:c0ff:fea2:4c5c no 2001:4978:1fb:6400::d2 2001:770:18:7:225:90ff:fe0c:acb4 no 2001:49aa:111:aa00::11 2001:770:18:7:225:90ff:fe0c:acb4 no fe80:1111::11 2001:770:18:7:225:90ff:fe0c:acb4 no
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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