Session Report

Summary:

Test run at: 2020-07-20 17:49:29 GMT
Client Prefix (v4): 200.40.159.x/24
Client AS (v4): 6057
IPv4 Probes: 75

Outbound spoofing summary (from the client to our server)
Source address type	IPv4
Private - RFC1918	blocked
Routable	blocked
Largest spoofable neighbor prefix length	/27

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 (200.40.159.x/24) can spoof 31 neighboring addresses (within your /27 prefix)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
200.40.159.x/24	/31	6057	yes
200.40.159.x/24	/30	6057	yes
200.40.159.x/24	/29	6057	yes
200.40.159.x/24	/28	6057	yes
200.40.159.x/24	/27	6057	yes
200.40.159.x/24	/26	6057	no
200.40.159.x/24	/25	6057	no
200.40.159.x/24	/24	6057	no
200.40.158.x/24	/23	6057	no
200.40.157.x/24	/22	6057	no
200.40.155.x/24	/21	6057	no
200.40.151.x/24	/20	6057	no
200.40.143.x/24	/19	6057	no
200.40.191.x/24	/18	6057	no
200.40.223.x/24	/17	6057	no
200.40.31.x/24	/16	6057	no
200.41.159.x/24	/15	10834	no
200.42.159.x/24	/14	10481	no
200.44.159.x/24	/13	8048	no
200.32.159.x/24	/12	10834	no
200.56.159.x/24	/11	13999	no
200.8.159.x/24	/10	21826	no
200.104.159.x/24	/9	22047	no
200.168.159.x/24	/8	27699	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)

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).

Summary:

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

Feedback:

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