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: 2017-11-17 08:10:33 GMT
Client Prefix (v4): 89.248.135.x/24
Client AS (v4): 42517 (ST)
IPv4 Probes: 105
Client Prefix (v6): 2a00:1ae8:1xx::/40
Client AS (v6): 42517 (ST)
IPv6 Probes: 71

Outbound spoofing summary (from the client to our server)

Source address type IPv4 IPv6

Private - RFC1918 or ULA rewritten received

Routable rewritten received

Largest spoofable neighbor prefix length /30 /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.

Outbound spoofing summary (from the client to our server)
Source address type	IPv4	IPv6
Private - RFC1918 or ULA	rewritten	received
Routable	rewritten	received
Largest spoofable neighbor prefix length	/30	/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.

Warnings:

⚠️ Your host is behind a Network Address Translation (NAT) router or firewall which rewrites the source addresses of the test traffic. To test your provider's network further, you must remove the NAT/firewall/router and connect directly.

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 (89.248.135.x/24) can spoof 3 neighboring addresses (within your /30 prefix)

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

89.248.135.x/24 /31 42517 natblock

89.248.135.x/24 /30 42517 yes

89.248.135.x/24 /29 42517 rewritten

89.248.135.x/24 /28 42517 rewritten

89.248.135.x/24 /27 42517 rewritten

89.248.135.x/24 /26 42517 rewritten

89.248.135.x/24 /25 42517 rewritten

89.248.135.x/24 /24 42517 rewritten

89.248.134.x/24 /23 42517 rewritten

89.248.133.x/24 /22 42517 rewritten

89.248.131.x/24 /21 42517 rewritten

89.248.143.x/24 /20 42517 rewritten

89.248.151.x/24 /19 20634 rewritten

89.248.167.x/24 /18 29073 rewritten

89.248.199.x/24 /17 UNROUTED rewritten

89.248.7.x/24 /16 34087 rewritten

89.249.135.x/24 /15 41311 rewritten

89.250.135.x/24 /14 12337 rewritten

89.252.135.x/24 /13 51559 rewritten

89.240.135.x/24 /12 13285 rewritten

89.232.135.x/24 /11 30745 rewritten

89.216.135.x/24 /10 31042 rewritten

89.184.135.x/24 /9 39642 rewritten

89.120.135.x/24 /8 9050 rewritten

Meaning of status in Received column:

yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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.

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
89.248.135.x/24	/31	42517	natblock
89.248.135.x/24	/30	42517	yes
89.248.135.x/24	/29	42517	rewritten
89.248.135.x/24	/28	42517	rewritten
89.248.135.x/24	/27	42517	rewritten
89.248.135.x/24	/26	42517	rewritten
89.248.135.x/24	/25	42517	rewritten
89.248.135.x/24	/24	42517	rewritten
89.248.134.x/24	/23	42517	rewritten
89.248.133.x/24	/22	42517	rewritten
89.248.131.x/24	/21	42517	rewritten
89.248.143.x/24	/20	42517	rewritten
89.248.151.x/24	/19	20634	rewritten
89.248.167.x/24	/18	29073	rewritten
89.248.199.x/24	/17	UNROUTED	rewritten
89.248.7.x/24	/16	34087	rewritten
89.249.135.x/24	/15	41311	rewritten
89.250.135.x/24	/14	12337	rewritten
89.252.135.x/24	/13	51559	rewritten
89.240.135.x/24	/12	13285	rewritten
89.232.135.x/24	/11	30745	rewritten
89.216.135.x/24	/10	31042	rewritten
89.184.135.x/24	/9	39642	rewritten
89.120.135.x/24	/8	9050	rewritten

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 yes
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 yes
2001:49aa:111:aa00::11 2001:410:102:1::78 yes
fd11:1111:1111::1111 2001:410:102:1::78 yes
2001:4978:1fb:6400::d2 2001:410:90ff::5 yes
2001:49aa:111:aa00::11 2001:410:90ff::5 yes
fd11:1111:1111::1111 2001:410:90ff::5 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
2001:4978:1fb: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
2001:4978:1fb:6400::d2 2001:610:510:115:192:42:115:98 yes
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 yes
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 yes
2001:49aa:111:aa00::11 2001:708:40:2001:21c:c0ff:fea2:4c5c yes
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 yes
2001:49aa:111:aa00::11 2001:770:18:7:225:90ff:fe0c:acb4 yes
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 yes
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

Spoofed source address	Destination	Received
2001:4978:1fb:6400::d2	2001:388:1:5001:21c:c0ff:fea2:4a3a	yes
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	yes
2001:49aa:111:aa00::11	2001:410:102:1::78	yes
fd11:1111:1111::1111	2001:410:102:1::78	yes
2001:4978:1fb:6400::d2	2001:410:90ff::5	yes
2001:49aa:111:aa00::11	2001:410:90ff::5	yes
fd11:1111:1111::1111	2001:410:90ff::5	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
2001:4978:1fb: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
2001:4978:1fb:6400::d2	2001:610:510:115:192:42:115:98	yes
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	yes
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	yes
2001:49aa:111:aa00::11	2001:708:40:2001:21c:c0ff:fea2:4c5c	yes
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	yes
2001:49aa:111:aa00::11	2001:770:18:7:225:90ff:fe0c:acb4	yes
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	yes
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

IPv6 Adjacent Netblock Testing:

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

2a00:1ae8:1xx::/40 /120 42517 yes

2a00:1ae8:1xx::/40 /112 42517 yes

2a00:1ae8:1xx::/40 /104 42517 yes

2a00:1ae8:1xx::/40 /96 42517 yes

2a00:1ae8:1xx::/40 /88 42517 yes

2a00:1ae8:1xx::/40 /80 42517 yes

2a00:1ae8:1xx::/40 /72 42517 yes

2a00:1ae8:1xx::/40 /64 42517 yes

2a00:1ae8:1xx::/40 /56 42517 yes

2a00:1ae8:1xx::/40 /48 42517 yes

2a00:1ae8:1xx::/40 /40 42517 yes

2a00:1ae8:81xx::/40 /32 42517 yes

2a00:1a68:1xx::/40 /24 38955 yes

2a00:9ae8:1xx::/40 /16 12552 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)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2a00:1ae8:1xx::/40	/120	42517	yes
2a00:1ae8:1xx::/40	/112	42517	yes
2a00:1ae8:1xx::/40	/104	42517	yes
2a00:1ae8:1xx::/40	/96	42517	yes
2a00:1ae8:1xx::/40	/88	42517	yes
2a00:1ae8:1xx::/40	/80	42517	yes
2a00:1ae8:1xx::/40	/72	42517	yes
2a00:1ae8:1xx::/40	/64	42517	yes
2a00:1ae8:1xx::/40	/56	42517	yes
2a00:1ae8:1xx::/40	/48	42517	yes
2a00:1ae8:1xx::/40	/40	42517	yes
2a00:1ae8:81xx::/40	/32	42517	yes
2a00:1a68:1xx::/40	/24	38955	yes
2a00:9ae8:1xx::/40	/16	12552	yes

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.

yes	Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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.