Test run at: 2017-04-06 18:20:50 GMT
Client Prefix (v4): 208.81.1.x/24
Client AS (v4): 18451 (LESNET)
IPv4 Probes: 90
Client Prefix (v6): 2605:e200:xx::/40
Client AS (v6): 18451 (LESNET)
IPv6 Probes: 77
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 /88
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 (208.81.1.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 208.81.1.x/24 /31 18451 rewritten 208.81.1.x/24 /30 18451 rewritten 208.81.1.x/24 /29 18451 natblock 208.81.1.x/24 /28 18451 rewritten 208.81.1.x/24 /27 18451 rewritten 208.81.1.x/24 /26 18451 rewritten 208.81.1.x/24 /25 18451 rewritten 208.81.1.x/24 /24 18451 rewritten 208.81.0.x/24 /23 18451 rewritten 208.81.3.x/24 /22 18451 rewritten 208.81.5.x/24 /21 18451 rewritten 208.81.9.x/24 /20 30400 sendto 208.81.17.x/24 /19 UNROUTED sendto 208.81.33.x/24 /18 19240 sendto 208.81.65.x/24 /17 14600 sendto 208.81.129.x/24 /16 23052 sendto 208.80.1.x/24 /15 33302 sendto 208.83.1.x/24 /14 18905 sendto 208.85.1.x/24 /13 40244 sendto 208.89.1.x/24 /12 16908 sendto 208.65.1.x/24 /11 36143 sendto 208.113.1.x/24 /10 21570 sendto 208.17.1.x/24 /9 1239 sendto 208.209.1.x/24 /8 701 sendto Meaning of status in Received column:
natblock Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address. 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. sendto The spoofer client was unable to send spoofed headers due to an operating system restriction.
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 2001:4978:1fb: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 fd11:1111:1111::1111 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 fd11:1111:1111::1111 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 fd11:1111:1111::1111 2001:410:90ff::5 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 2001:4978:1fb: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 2001:4978:1fb: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 2001:4978:1fb: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 2001:4978:1fb: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 fd11:1111:1111::1111 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 fd11:1111:1111::1111 2001:770:18:7:225:90ff:fe0c:acb4 no
Summary:
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 2605:e200:xx::/40 /120 18451 yes 2605:e200:xx::/40 /112 18451 yes 2605:e200:xx::/40 /104 18451 yes 2605:e200:xx::/40 /96 18451 yes 2605:e200:xx::/40 /88 18451 yes 2605:e200:xx::/40 /80 18451 sendto 2605:e200:xx::/40 /72 18451 sendto 2605:e200:xx::/40 /64 18451 sendto 2605:e200:xx::/40 /56 18451 sendto 2605:e200:xx::/40 /48 18451 sendto 2605:e200:xx::/40 /40 18451 sendto 2605:e200:80xx::/40 /32 18451 sendto 2605:e280:xx::/40 /24 UNROUTED sendto 2605:6200:xx::/40 /16 UNROUTED sendto Meaning of status in Received column:
yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) sendto The spoofer client was unable to send spoofed headers due to an operating system restriction.
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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