Session Report

Summary:

Test run at: 2023-11-20 14:51:00 GMT
Client Prefix (v4): 190.210.32.x/24
Client AS (v4): 16814
IPv4 Probes: 69
Client Prefix (v6): 2800:40:xx::/40
Client AS (v6): 16814
IPv6 Probes: 60

Outbound spoofing summary (from the client to our server)
Source address type	IPv4		IPv6
Private - RFC1918 or ULA	rewritten		unknown
Routable	rewritten		unknown
Largest spoofable neighbor prefix length	none		none

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

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
190.210.32.x/24	/31	16814	sendto
190.210.32.x/24	/30	16814	sendto
190.210.32.x/24	/29	16814	sendto
190.210.32.x/24	/28	16814	sendto
190.210.32.x/24	/27	16814	rewritten
190.210.32.x/24	/26	16814	sendto
190.210.32.x/24	/25	16814	sendto
190.210.32.x/24	/24	16814	sendto
190.210.33.x/24	/23	16814	sendto
190.210.34.x/24	/22	16814	sendto
190.210.36.x/24	/21	16814	sendto
190.210.40.x/24	/20	16814	sendto
190.210.48.x/24	/19	16814	sendto
190.210.0.x/24	/18	16814	sendto
190.210.96.x/24	/17	16814	sendto
190.210.160.x/24	/16	16814	sendto
190.211.32.x/24	/15	14117	sendto
190.208.32.x/24	/14	6429	sendto
190.214.32.x/24	/13	28006	sendto
190.218.32.x/24	/12	18809	sendto
190.194.32.x/24	/11	7303	sendto
190.242.32.x/24	/10	28094	sendto
190.146.32.x/24	/9	10620	sendto
190.82.32.x/24	/8	7418	sendto

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.
sendto	The spoofer client was unable to send spoofed headers due to an operating system restriction.

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
2001:48d0:101:501::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
2800:40:xx::/40	/120	16814	sendto
2800:40:xx::/40	/112	16814	sendto
2800:40:xx::/40	/104	16814	sendto
2800:40:xx::/40	/96	16814	sendto
2800:40:xx::/40	/88	16814	sendto
2800:40:xx::/40	/80	16814	sendto
2800:40:xx::/40	/72	16814	sendto
2800:40:xx::/40	/64	16814	sendto
2800:40:xx::/40	/56	16814	sendto
2800:40:xx::/40	/48	16814	sendto
2800:40:xx::/40	/40	16814	sendto
2800:40:80xx::/40	/32	16814	sendto
2800:c0:xx::/40	/24	UNROUTED	sendto
2800:8040:xx::/40	/16	UNROUTED	sendto

Meaning of status in Received column:

sendto

The spoofer client was unable to send spoofed headers due to an operating system restriction.

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.