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: 2021-10-08 02:29:33 GMT
Client Prefix (v4): 158.51.125.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 ✔ blocked ✔ blocked

Largest spoofable neighbor prefix length none /64

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	none	/64

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

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

158.51.125.x/24 /31 399804 no

158.51.125.x/24 /30 399804 no

158.51.125.x/24 /29 399804 no

158.51.125.x/24 /28 399804 no

158.51.125.x/24 /27 399804 no

158.51.125.x/24 /26 399804 no

158.51.125.x/24 /25 399804 no

158.51.125.x/24 /24 399804 no

158.51.124.x/24 /23 399804 no

158.51.127.x/24 /22 399804 no

158.51.121.x/24 /21 62563 no

158.51.117.x/24 /20 20220 no

158.51.109.x/24 /19 54600 no

158.51.93.x/24 /18 399203 no

158.51.61.x/24 /17 47002 no

158.51.253.x/24 /16 53812 no

158.50.125.x/24 /15 UNROUTED no

158.49.125.x/24 /14 766 no

158.55.125.x/24 /13 UNROUTED no

158.59.125.x/24 /12 25807 no

158.35.125.x/24 /11 7018 no

158.19.125.x/24 /10 1600 no

158.115.125.x/24 /9 UNROUTED no

158.179.125.x/24 /8 39550 no

Meaning of status in Received column:

no Packets spoofed from adjacent netblock were not received, probably due to blocking

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
158.51.125.x/24	/31	399804	no
158.51.125.x/24	/30	399804	no
158.51.125.x/24	/29	399804	no
158.51.125.x/24	/28	399804	no
158.51.125.x/24	/27	399804	no
158.51.125.x/24	/26	399804	no
158.51.125.x/24	/25	399804	no
158.51.125.x/24	/24	399804	no
158.51.124.x/24	/23	399804	no
158.51.127.x/24	/22	399804	no
158.51.121.x/24	/21	62563	no
158.51.117.x/24	/20	20220	no
158.51.109.x/24	/19	54600	no
158.51.93.x/24	/18	399203	no
158.51.61.x/24	/17	47002	no
158.51.253.x/24	/16	53812	no
158.50.125.x/24	/15	UNROUTED	no
158.49.125.x/24	/14	766	no
158.55.125.x/24	/13	UNROUTED	no
158.59.125.x/24	/12	25807	no
158.35.125.x/24	/11	7018	no
158.19.125.x/24	/10	1600	no
158.115.125.x/24	/9	UNROUTED	no
158.179.125.x/24	/8	39550	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 probes:

Spoofed source address Destination Received
2001:48d0:101:501::159 2001:48d0:101:501::242 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
2001:48d0:101:501::159 2001:48d0:101:501::247 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
2001:48d0:101:501::159 2001:610:510:115:192:42:115:98 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
2001:48d0:101:501::159 2001:630:212:225:225:90ff:fe0c:45a6 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
2001:48d0:101:501::159 2001:770:1c:7:225:90ff:fe0c:acb4 no
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

Spoofed source address	Destination	Received
2001:48d0:101:501::159	2001:48d0:101:501::242	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
2001:48d0:101:501::159	2001:48d0:101:501::247	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
2001:48d0:101:501::159	2001:610:510:115:192:42:115:98	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
2001:48d0:101:501::159	2001:630:212:225:225:90ff:fe0c:45a6	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
2001:48d0:101:501::159	2001:770:1c:7:225:90ff:fe0c:acb4	no
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

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 no

2606:65c0:xx::/40 /48 399804 no

2606:65c0:xx::/40 /40 UNROUTED no

2606:65c0:80xx::/40 /32 UNROUTED no

2606:6540:xx::/40 /24 UNROUTED no

2606:e5c0:xx::/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
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	no
2606:65c0:xx::/40	/48	399804	no
2606:65c0:xx::/40	/40	UNROUTED	no
2606:65c0:80xx::/40	/32	UNROUTED	no
2606:6540:xx::/40	/24	UNROUTED	no
2606:e5c0:xx::/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)