Session Report

Summary:

Test run at: 2019-06-17 20:08:11 GMT
Client Prefix (v4): 200.160.12.x/24
Client AS (v4): 22548
IPv4 Probes: 93
Client Prefix (v6): 2001:12ff:xx::/40
Client AS (v6): 22548

Outbound spoofing summary (from the client to our server)
Source address type	IPv4
Private - RFC1918	blocked
Routable	blocked
Largest spoofable neighbor prefix length	/23

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 (200.160.12.x/24) can spoof 511 neighboring addresses (within your /23 prefix)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
200.160.12.x/24	/31	22548	sendto
200.160.12.x/24	/30	22548	yes
200.160.12.x/24	/29	22548	sendto
200.160.12.x/24	/28	22548	sendto
200.160.12.x/24	/27	22548	sendto
200.160.12.x/24	/26	22548	yes
200.160.12.x/24	/25	22548	sendto
200.160.12.x/24	/24	22548	sendto
200.160.13.x/24	/23	22548	yes
200.160.14.x/24	/22	22548	sendto
200.160.8.x/24	/21	22548	sendto
200.160.4.x/24	/20	22548	no
200.160.28.x/24	/19	22148	no
200.160.44.x/24	/18	UNROUTED	sendto
200.160.76.x/24	/17	19182	sendto
200.160.140.x/24	/16	22819	sendto
200.161.12.x/24	/15	27699	sendto
200.162.12.x/24	/14	15180	sendto
200.164.12.x/24	/13	7738	sendto
200.168.12.x/24	/12	27699	sendto
200.176.12.x/24	/11	UNROUTED	sendto
200.128.12.x/24	/10	53164	sendto
200.224.12.x/24	/9	51964	sendto
200.32.12.x/24	/8	10481	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)
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.

Summary:

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

Feedback:

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