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: 2024-02-15 12:13:00 GMT
Client Prefix (v4): 45.140.87.x/24
Client AS (v4): 199947 (Nexusway)
IPv4 Probes: 66
Client Prefix (v6): 2a01:5420:xx::/40
Client AS (v6): 199947 (Nexusway)
IPv6 Probes: 56

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 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	rewritten	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 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 (45.140.87.x/24) can spoof 0 neighboring addresses

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

45.140.87.x/24 /31 199947 rewritten

45.140.87.x/24 /30 199947 rewritten

45.140.87.x/24 /29 199947 rewritten

45.140.87.x/24 /28 199947 rewritten

45.140.87.x/24 /27 199947 rewritten

45.140.87.x/24 /26 199947 rewritten

45.140.87.x/24 /25 199947 rewritten

45.140.87.x/24 /24 199947 rewritten

45.140.86.x/24 /23 199947 rewritten

45.140.85.x/24 /22 199947 rewritten

45.140.83.x/24 /21 51522 rewritten

45.140.95.x/24 /20 8749 rewritten

45.140.71.x/24 /19 20712 rewritten

45.140.119.x/24 /18 42263 rewritten

45.140.23.x/24 /17 UNROUTED rewritten

45.140.215.x/24 /16 20712 rewritten

45.141.87.x/24 /15 206728 rewritten

45.142.87.x/24 /14 UNROUTED rewritten

45.136.87.x/24 /13 204601 rewritten

45.132.87.x/24 /12 208448 rewritten

45.156.87.x/24 /11 UNROUTED rewritten

45.172.87.x/24 /10 268757 rewritten

45.204.87.x/24 /9 138630 rewritten

45.12.87.x/24 /8 208961 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
45.140.87.x/24	/31	199947	rewritten
45.140.87.x/24	/30	199947	rewritten
45.140.87.x/24	/29	199947	rewritten
45.140.87.x/24	/28	199947	rewritten
45.140.87.x/24	/27	199947	rewritten
45.140.87.x/24	/26	199947	rewritten
45.140.87.x/24	/25	199947	rewritten
45.140.87.x/24	/24	199947	rewritten
45.140.86.x/24	/23	199947	rewritten
45.140.85.x/24	/22	199947	rewritten
45.140.83.x/24	/21	51522	rewritten
45.140.95.x/24	/20	8749	rewritten
45.140.71.x/24	/19	20712	rewritten
45.140.119.x/24	/18	42263	rewritten
45.140.23.x/24	/17	UNROUTED	rewritten
45.140.215.x/24	/16	20712	rewritten
45.141.87.x/24	/15	206728	rewritten
45.142.87.x/24	/14	UNROUTED	rewritten
45.136.87.x/24	/13	204601	rewritten
45.132.87.x/24	/12	208448	rewritten
45.156.87.x/24	/11	UNROUTED	rewritten
45.172.87.x/24	/10	268757	rewritten
45.204.87.x/24	/9	138630	rewritten
45.12.87.x/24	/8	208961	rewritten

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 1 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 2001:638:902:2000:ba27:ebff:fe86:2c51 yes
2001:4978:1fb:6400::d2 2001:638:902:2000:ba27:ebff:fe86:2c51 no
2001:49aa:111:aa00::11 2001:638:902:2000:ba27:ebff:fe86:2c51 no
fd11:1111:1111::1111 2001:638:902:2000:ba27:ebff:fe86:2c51 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 yes
2001:48d0:101:501::159 2607:8400:2880:4::80df:9d0d yes
2001:4978:1fb:6400::d2 2607:8400:2880:4::80df:9d0d yes
2001:49aa:111:aa00::11 2607:8400:2880:4::80df:9d0d yes
fd11:1111:1111::1111 2607:8400:2880:4::80df:9d0d no
2001:48d0:101:501::159 2607:f278:2:13:da3a:ddff:fe30:ce14 yes
2001:4978:1fb:6400::d2 2607:f278:2:13:da3a:ddff:fe30:ce14 yes
2001:49aa:111:aa00::11 2607:f278:2:13:da3a:ddff:fe30:ce14 yes
fd11:1111:1111::1111 2607:f278:2:13:da3a:ddff:fe30:ce14 yes

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	2001:638:902:2000:ba27:ebff:fe86:2c51	yes
2001:4978:1fb:6400::d2	2001:638:902:2000:ba27:ebff:fe86:2c51	no
2001:49aa:111:aa00::11	2001:638:902:2000:ba27:ebff:fe86:2c51	no
fd11:1111:1111::1111	2001:638:902:2000:ba27:ebff:fe86:2c51	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	yes
2001:48d0:101:501::159	2607:8400:2880:4::80df:9d0d	yes
2001:4978:1fb:6400::d2	2607:8400:2880:4::80df:9d0d	yes
2001:49aa:111:aa00::11	2607:8400:2880:4::80df:9d0d	yes
fd11:1111:1111::1111	2607:8400:2880:4::80df:9d0d	no
2001:48d0:101:501::159	2607:f278:2:13:da3a:ddff:fe30:ce14	yes
2001:4978:1fb:6400::d2	2607:f278:2:13:da3a:ddff:fe30:ce14	yes
2001:49aa:111:aa00::11	2607:f278:2:13:da3a:ddff:fe30:ce14	yes
fd11:1111:1111::1111	2607:f278:2:13:da3a:ddff:fe30:ce14	yes

IPv6 Adjacent Netblock Testing:

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

2a01:5420:xx::/40 /120 199947 yes

2a01:5420:xx::/40 /112 199947 yes

2a01:5420:xx::/40 /104 199947 yes

2a01:5420:xx::/40 /96 199947 yes

2a01:5420:xx::/40 /88 199947 yes

2a01:5420:xx::/40 /80 199947 yes

2a01:5420:xx::/40 /72 199947 yes

2a01:5420:xx::/40 /64 199947 yes

2a01:5420:xx::/40 /56 199947 yes

2a01:5420:xx::/40 /48 199947 yes

2a01:5420:xx::/40 /40 199947 yes

2a01:5420:80xx::/40 /32 199947 yes

2a01:54a0:xx::/40 /24 UNROUTED yes

2a01:d420: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
2a01:5420:xx::/40	/120	199947	yes
2a01:5420:xx::/40	/112	199947	yes
2a01:5420:xx::/40	/104	199947	yes
2a01:5420:xx::/40	/96	199947	yes
2a01:5420:xx::/40	/88	199947	yes
2a01:5420:xx::/40	/80	199947	yes
2a01:5420:xx::/40	/72	199947	yes
2a01:5420:xx::/40	/64	199947	yes
2a01:5420:xx::/40	/56	199947	yes
2a01:5420:xx::/40	/48	199947	yes
2a01:5420:xx::/40	/40	199947	yes
2a01:5420:80xx::/40	/32	199947	yes
2a01:54a0:xx::/40	/24	UNROUTED	yes
2a01:d420: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.