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: 2021-09-04 14:52:04 GMT
Client Prefix (v4): 66.187.5.x/24
Client AS (v4): 399804 (HOSTODO)
IPv4 Probes: 66
Client Prefix (v6): 2606:65c0:xx::/40
Client AS (v6): 399804 (HOSTODO)
IPv6 Probes: 56

Outbound spoofing summary (from the client to our server)

Source address type IPv4 IPv6

Private - RFC1918 or ULA blocked blocked

Routable ✔ received received

Largest spoofable neighbor prefix length /8 /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	blocked	blocked
Routable	✔	received	received
Largest spoofable neighbor prefix length	/8	/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.

IPv4 Adjacent Netblock Testing:

Your host (66.187.5.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)

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

66.187.5.x/24 /31 399804 yes

66.187.5.x/24 /30 399804 yes

66.187.5.x/24 /29 399804 yes

66.187.5.x/24 /28 399804 yes

66.187.5.x/24 /27 399804 yes

66.187.5.x/24 /26 399804 yes

66.187.5.x/24 /25 399804 yes

66.187.5.x/24 /24 399804 yes

66.187.4.x/24 /23 20150 yes

66.187.7.x/24 /22 UNROUTED no

66.187.1.x/24 /21 UNROUTED no

66.187.13.x/24 /20 UNROUTED no

66.187.21.x/24 /19 63133 yes

66.187.37.x/24 /18 14703 yes

66.187.69.x/24 /17 40156 yes

66.187.133.x/24 /16 33327 yes

66.186.5.x/24 /15 7296 yes

66.185.5.x/24 /14 17306 yes

66.191.5.x/24 /13 20115 yes

66.179.5.x/24 /12 7381 yes

66.171.5.x/24 /11 19201 yes

66.155.5.x/24 /10 6640 yes

66.251.5.x/24 /9 7029 yes

66.59.5.x/24 /8 17358 yes

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
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
66.187.5.x/24	/31	399804	yes
66.187.5.x/24	/30	399804	yes
66.187.5.x/24	/29	399804	yes
66.187.5.x/24	/28	399804	yes
66.187.5.x/24	/27	399804	yes
66.187.5.x/24	/26	399804	yes
66.187.5.x/24	/25	399804	yes
66.187.5.x/24	/24	399804	yes
66.187.4.x/24	/23	20150	yes
66.187.7.x/24	/22	UNROUTED	no
66.187.1.x/24	/21	UNROUTED	no
66.187.13.x/24	/20	UNROUTED	no
66.187.21.x/24	/19	63133	yes
66.187.37.x/24	/18	14703	yes
66.187.69.x/24	/17	40156	yes
66.187.133.x/24	/16	33327	yes
66.186.5.x/24	/15	7296	yes
66.185.5.x/24	/14	17306	yes
66.191.5.x/24	/13	20115	yes
66.179.5.x/24	/12	7381	yes
66.171.5.x/24	/11	19201	yes
66.155.5.x/24	/10	6640	yes
66.251.5.x/24	/9	7029	yes
66.59.5.x/24	/8	17358	yes

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 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 no
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 no
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 yes
2001:49aa:111:aa00::11 2001:770:1c:7:225:90ff:fe0c:acb4 yes
fd11:1111:1111::1111 2001:770:1c:7:225:90ff:fe0c:acb4 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	no
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	no
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	yes
2001:49aa:111:aa00::11	2001:770:1c:7:225:90ff:fe0c:acb4	yes
fd11:1111:1111::1111	2001:770:1c:7:225:90ff:fe0c:acb4	no

IPv6 Adjacent Netblock Testing:

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

2606:65c0:xx::/40 /120 399804 yes

2606:65c0:xx::/40 /112 399804 yes

2606:65c0:xx::/40 /104 399804 yes

2606:65c0:xx::/40 /96 399804 yes

2606:65c0:xx::/40 /88 399804 yes

2606:65c0:xx::/40 /80 399804 yes

2606:65c0:xx::/40 /72 399804 yes

2606:65c0:xx::/40 /64 399804 yes

2606:65c0:xx::/40 /56 399804 yes

2606:65c0:xx::/40 /48 399804 yes

2606:65c0:xx::/40 /40 UNROUTED yes

2606:65c0:80xx::/40 /32 UNROUTED yes

2606:6540:xx::/40 /24 UNROUTED yes

2606:e5c0:xx::/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
2606:65c0:xx::/40	/120	399804	yes
2606:65c0:xx::/40	/112	399804	yes
2606:65c0:xx::/40	/104	399804	yes
2606:65c0:xx::/40	/96	399804	yes
2606:65c0:xx::/40	/88	399804	yes
2606:65c0:xx::/40	/80	399804	yes
2606:65c0:xx::/40	/72	399804	yes
2606:65c0:xx::/40	/64	399804	yes
2606:65c0:xx::/40	/56	399804	yes
2606:65c0:xx::/40	/48	399804	yes
2606:65c0:xx::/40	/40	UNROUTED	yes
2606:65c0:80xx::/40	/32	UNROUTED	yes
2606:6540:xx::/40	/24	UNROUTED	yes
2606:e5c0:xx::/40	/16	UNROUTED	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.

no	Packets spoofed from adjacent netblock were not received, probably due to blocking
yes	Packets spoofed from adjacent netblock were received
yes	Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)