Session Report

Summary:

Test run at: 2023-08-11 22:17:01 GMT
Client Prefix (v4): 186.86.33.x/24
Client AS (v4): 10620
IPv4 Probes: 63
Client Prefix (v6): 2800:484:2bxx::/40
Client AS (v6): 14080
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		/104

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

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
186.86.33.x/24	/31	10620	natblock
186.86.33.x/24	/30	10620	natblock
186.86.33.x/24	/29	10620	natblock
186.86.33.x/24	/28	10620	natblock
186.86.33.x/24	/27	10620	natblock
186.86.33.x/24	/26	10620	natblock
186.86.33.x/24	/25	10620	natblock
186.86.33.x/24	/24	10620	natblock
186.86.32.x/24	/23	10620	natblock
186.86.35.x/24	/22	10620	natblock
186.86.37.x/24	/21	10620	natblock
186.86.41.x/24	/20	10620	natblock
186.86.49.x/24	/19	10620	natblock
186.86.1.x/24	/18	10620	natblock
186.86.97.x/24	/17	10620	natblock
186.86.161.x/24	/16	10620	natblock
186.87.33.x/24	/15	10620	natblock
186.84.33.x/24	/14	10620	natblock
186.82.33.x/24	/13	10620	natblock
186.94.33.x/24	/12	8048	natblock
186.70.33.x/24	/11	14522	natblock
186.118.33.x/24	/10	3816	natblock
186.22.33.x/24	/9	27747	natblock
186.214.33.x/24	/8	18881	natblock

Meaning of status in Received column:

natblock

Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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
2800:484:2bxx::/40	/120	14080	yes
2800:484:2bxx::/40	/112	14080	yes
2800:484:2bxx::/40	/104	14080	yes
2800:484:2bxx::/40	/96	14080	no
2800:484:2bxx::/40	/88	14080	no
2800:484:2bxx::/40	/80	14080	no
2800:484:2bxx::/40	/72	14080	rewritten
2800:484:2bxx::/40	/64	14080	no
2800:484:2bxx::/40	/56	14080	rewritten
2800:484:2bxx::/40	/48	14080	no
2800:484:2bxx::/40	/40	14080	no
2800:484:abxx::/40	/32	10620	no
2800:404:2bxx::/40	/24	UNROUTED	no
2800:8484:2bxx::/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)
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.

Summary:

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

Feedback:

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