Session Report

Summary:

Test run at: 2017-04-05 12:09:20 GMT
Client Prefix (v4): 72.53.176.x/24
Client AS (v4): 30350 (REGION7-ESC)
IPv4 Probes: 90
Client Prefix (v6): 2604:c400:xx::/40
Client AS (v6): 30350 (REGION7-ESC)
IPv6 Probes: 77

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	/20		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.

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 (72.53.176.x/24) can spoof 4095 neighboring addresses (within your /20 prefix)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
72.53.176.x/24	/31	30350	yes
72.53.176.x/24	/30	30350	yes
72.53.176.x/24	/29	30350	yes
72.53.176.x/24	/28	30350	yes
72.53.176.x/24	/27	30350	yes
72.53.176.x/24	/26	30350	yes
72.53.176.x/24	/25	30350	yes
72.53.176.x/24	/24	30350	yes
72.53.177.x/24	/23	30350	yes
72.53.178.x/24	/22	30350	yes
72.53.180.x/24	/21	30350	yes
72.53.184.x/24	/20	30350	yes
72.53.160.x/24	/19	20385	sendto
72.53.144.x/24	/18	11814	sendto
72.53.240.x/24	/17	UNROUTED	sendto
72.53.48.x/24	/16	11814	sendto
72.52.176.x/24	/15	32244	sendto
72.55.176.x/24	/14	32613	sendto
72.49.176.x/24	/13	6181	sendto
72.61.176.x/24	/12	3651	sendto
72.37.176.x/24	/11	3257	sendto
72.21.176.x/24	/10	14717	sendto
72.117.176.x/24	/9	6167	sendto
72.181.176.x/24	/8	11427	sendto

Meaning of status in Received column:

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.

IPv6 probes:

Spoofed source address	Destination	Received

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2604:c400:xx::/40	/120	30350	sendto
2604:c400:xx::/40	/112	30350	sendto
2604:c400:xx::/40	/104	30350	sendto
2604:c400:xx::/40	/96	30350	sendto
2604:c400:xx::/40	/88	30350	sendto
2604:c400:xx::/40	/80	30350	sendto
2604:c400:xx::/40	/72	30350	sendto
2604:c400:xx::/40	/64	30350	sendto
2604:c400:xx::/40	/56	30350	sendto
2604:c400:xx::/40	/48	30350	sendto
2604:c400:xx::/40	/40	30350	sendto
2604:c400:80xx::/40	/32	30350	sendto
2604:c480:xx::/40	/24	UNROUTED	sendto
2604:4400: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:

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