Session Report

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| Data: Stats Summary Recent Tests Remediation Results by AS Results by Country Results by Provider |

Summary:

Test run at: 2018-05-25 13:25:19 GMT
Client Prefix (v4): 173.249.37.x/24
Client AS (v4): 51167 (CONTABO)
IPv4 Probes: 99
Client Prefix (v6): 2a02:c207:20xx::/40
Client AS (v6): 51167 (CONTABO)
IPv6 Probes: 65

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 /18 /32

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.

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	/18	/32

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 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.

IPv4 Adjacent Netblock Testing:

Your host (173.249.37.x/24) can spoof 16383 neighboring addresses (within your /18 prefix)

Spoofed source address (anon) Prefix
Length ASN of spoofed
source address Received

173.249.37.x/24 /31 51167 yes

173.249.37.x/24 /30 51167 yes

173.249.37.x/24 /29 51167 yes

173.249.37.x/24 /28 51167 yes

173.249.37.x/24 /27 51167 yes

173.249.37.x/24 /26 51167 yes

173.249.37.x/24 /25 51167 yes

173.249.37.x/24 /24 51167 yes

173.249.36.x/24 /23 51167 yes

173.249.39.x/24 /22 51167 yes

173.249.33.x/24 /21 51167 yes

173.249.45.x/24 /20 51167 yes

173.249.53.x/24 /19 51167 yes

173.249.5.x/24 /18 51167 yes

173.249.101.x/24 /17 UNROUTED no

173.249.165.x/24 /16 UNROUTED no

173.248.37.x/24 /15 UNROUTED no

173.251.37.x/24 /14 UNROUTED no

173.253.37.x/24 /13 UNROUTED no

173.241.37.x/24 /12 UNROUTED no

173.233.37.x/24 /11 UNROUTED no

173.217.37.x/24 /10 UNROUTED no

173.185.37.x/24 /9 UNROUTED no

173.121.37.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)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
173.249.37.x/24	/31	51167	yes
173.249.37.x/24	/30	51167	yes
173.249.37.x/24	/29	51167	yes
173.249.37.x/24	/28	51167	yes
173.249.37.x/24	/27	51167	yes
173.249.37.x/24	/26	51167	yes
173.249.37.x/24	/25	51167	yes
173.249.37.x/24	/24	51167	yes
173.249.36.x/24	/23	51167	yes
173.249.39.x/24	/22	51167	yes
173.249.33.x/24	/21	51167	yes
173.249.45.x/24	/20	51167	yes
173.249.53.x/24	/19	51167	yes
173.249.5.x/24	/18	51167	yes
173.249.101.x/24	/17	UNROUTED	no
173.249.165.x/24	/16	UNROUTED	no
173.248.37.x/24	/15	UNROUTED	no
173.251.37.x/24	/14	UNROUTED	no
173.253.37.x/24	/13	UNROUTED	no
173.241.37.x/24	/12	UNROUTED	no
173.233.37.x/24	/11	UNROUTED	no
173.217.37.x/24	/10	UNROUTED	no
173.185.37.x/24	/9	UNROUTED	no
173.121.37.x/24	/8	UNROUTED	no

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:

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
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
2001:4978:1fb:6400::d2 2607:f278:2:13:ba27:ebff:fe3f:b21e no
2001:49aa:111:aa00::11 2607:f278:2:13:ba27:ebff:fe3f:b21e no
fd11:1111:1111::1111 2607:f278:2:13:ba27:ebff:fe3f:b21e no

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
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
2001:4978:1fb:6400::d2	2607:f278:2:13:ba27:ebff:fe3f:b21e	no
2001:49aa:111:aa00::11	2607:f278:2:13:ba27:ebff:fe3f:b21e	no
fd11:1111:1111::1111	2607:f278:2:13:ba27:ebff:fe3f:b21e	no

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon) Prefix
Length ASN of spoofed
source address Received

2a02:c207:20xx::/40 /120 51167 yes

2a02:c207:20xx::/40 /112 51167 yes

2a02:c207:20xx::/40 /104 51167 yes

2a02:c207:20xx::/40 /96 51167 yes

2a02:c207:20xx::/40 /88 51167 yes

2a02:c207:20xx::/40 /80 51167 yes

2a02:c207:20xx::/40 /72 51167 yes

2a02:c207:20xx::/40 /64 51167 yes

2a02:c207:20xx::/40 /56 51167 yes

2a02:c207:20xx::/40 /48 51167 yes

2a02:c207:20xx::/40 /40 51167 yes

2a02:c207:a0xx::/40 /32 51167 yes

2a02:c287:20xx::/40 /24 UNROUTED no

2a02:4207:20xx::/40 /16 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)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2a02:c207:20xx::/40	/120	51167	yes
2a02:c207:20xx::/40	/112	51167	yes
2a02:c207:20xx::/40	/104	51167	yes
2a02:c207:20xx::/40	/96	51167	yes
2a02:c207:20xx::/40	/88	51167	yes
2a02:c207:20xx::/40	/80	51167	yes
2a02:c207:20xx::/40	/72	51167	yes
2a02:c207:20xx::/40	/64	51167	yes
2a02:c207:20xx::/40	/56	51167	yes
2a02:c207:20xx::/40	/48	51167	yes
2a02:c207:20xx::/40	/40	51167	yes
2a02:c207:a0xx::/40	/32	51167	yes
2a02:c287:20xx::/40	/24	UNROUTED	no
2a02:4207:20xx::/40	/16	UNROUTED	no

Summary:

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.

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)