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: 2021-05-07 14:47:55 GMT
Client Prefix (v4): 85.204.109.x/24
Client AS (v4): 207375 (FIBO)
IPv4 Probes: 66
Client Prefix (v6): 2a00:bba0:12xx::/40
Client AS (v6): 207375 (FIBO)
IPv6 Probes: 56

Outbound spoofing summary (from the client to our server)

Source address type IPv4 IPv6

Private - RFC1918 or ULA rewritten received

Routable ✔ received received

Largest spoofable neighbor prefix length none /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	✔	received	received
Largest spoofable neighbor prefix length	none	/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 but spoofed packets are still being received without modification. See here for more information.

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 (85.204.109.x/24) can spoof 0 neighboring addresses

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

85.204.109.x/24 /31 207375 rewritten

85.204.109.x/24 /30 207375 rewritten

85.204.109.x/24 /29 207375 rewritten

85.204.109.x/24 /28 207375 rewritten

85.204.109.x/24 /27 207375 rewritten

85.204.109.x/24 /26 207375 rewritten

85.204.109.x/24 /25 207375 rewritten

85.204.109.x/24 /24 207375 rewritten

85.204.108.x/24 /23 5606 rewritten

85.204.111.x/24 /22 33977 rewritten

85.204.105.x/24 /21 39501 rewritten

85.204.101.x/24 /20 6663 rewritten

85.204.125.x/24 /19 12695 rewritten

85.204.77.x/24 /18 39501 rewritten

85.204.45.x/24 /17 45035 rewritten

85.204.237.x/24 /16 8751 rewritten

85.205.109.x/24 /15 12663 rewritten

85.206.109.x/24 /14 8764 rewritten

85.200.109.x/24 /13 8542 rewritten

85.196.109.x/24 /12 2116 rewritten

85.220.109.x/24 /11 6677 rewritten

85.236.109.x/24 /10 UNROUTED rewritten

85.140.109.x/24 /9 28884 rewritten

85.76.109.x/24 /8 719 rewritten

Meaning of status in Received column:

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
85.204.109.x/24	/31	207375	rewritten
85.204.109.x/24	/30	207375	rewritten
85.204.109.x/24	/29	207375	rewritten
85.204.109.x/24	/28	207375	rewritten
85.204.109.x/24	/27	207375	rewritten
85.204.109.x/24	/26	207375	rewritten
85.204.109.x/24	/25	207375	rewritten
85.204.109.x/24	/24	207375	rewritten
85.204.108.x/24	/23	5606	rewritten
85.204.111.x/24	/22	33977	rewritten
85.204.105.x/24	/21	39501	rewritten
85.204.101.x/24	/20	6663	rewritten
85.204.125.x/24	/19	12695	rewritten
85.204.77.x/24	/18	39501	rewritten
85.204.45.x/24	/17	45035	rewritten
85.204.237.x/24	/16	8751	rewritten
85.205.109.x/24	/15	12663	rewritten
85.206.109.x/24	/14	8764	rewritten
85.200.109.x/24	/13	8542	rewritten
85.196.109.x/24	/12	2116	rewritten
85.220.109.x/24	/11	6677	rewritten
85.236.109.x/24	/10	UNROUTED	rewritten
85.140.109.x/24	/9	28884	rewritten
85.76.109.x/24	/8	719	rewritten

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 10 IP hop(s).

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
2001:48d0:101:501::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 yes
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 yes
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 no
2001:49aa:111:aa00::11 2001:770:1c:7:225:90ff:fe0c:acb4 no
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 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

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	yes
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	yes
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	no
2001:49aa:111:aa00::11	2001:770:1c:7:225:90ff:fe0c:acb4	no
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	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

IPv6 Adjacent Netblock Testing:

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

2a00:bba0:12xx::/40 /120 207375 yes

2a00:bba0:12xx::/40 /112 207375 yes

2a00:bba0:12xx::/40 /104 207375 yes

2a00:bba0:12xx::/40 /96 207375 yes

2a00:bba0:12xx::/40 /88 207375 yes

2a00:bba0:12xx::/40 /80 207375 yes

2a00:bba0:12xx::/40 /72 207375 yes

2a00:bba0:12xx::/40 /64 207375 yes

2a00:bba0:12xx::/40 /56 207375 yes

2a00:bba0:12xx::/40 /48 207375 yes

2a00:bba0:12xx::/40 /40 207375 yes

2a00:bba0:92xx::/40 /32 207375 yes

2a00:bb20:12xx::/40 /24 UNROUTED yes

2a00:3ba0:12xx::/40 /16 UNROUTED yes

Meaning of status in Received column:

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:bba0:12xx::/40	/120	207375	yes
2a00:bba0:12xx::/40	/112	207375	yes
2a00:bba0:12xx::/40	/104	207375	yes
2a00:bba0:12xx::/40	/96	207375	yes
2a00:bba0:12xx::/40	/88	207375	yes
2a00:bba0:12xx::/40	/80	207375	yes
2a00:bba0:12xx::/40	/72	207375	yes
2a00:bba0:12xx::/40	/64	207375	yes
2a00:bba0:12xx::/40	/56	207375	yes
2a00:bba0:12xx::/40	/48	207375	yes
2a00:bba0:12xx::/40	/40	207375	yes
2a00:bba0:92xx::/40	/32	207375	yes
2a00:bb20:12xx::/40	/24	UNROUTED	yes
2a00:3ba0:12xx::/40	/16	UNROUTED	yes

Summary:

The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.

Feedback:

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