Session Report

Summary:

Test run at: 2019-11-04 23:06:10 GMT
Client Prefix (v4): 142.4.199.x/24
Client AS (v4): 16276 (OVH)
IPv4 Probes: 75

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

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

IPv4 Adjacent Netblock Testing:

Your host (142.4.199.x/24) can spoof 0 neighboring addresses

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
142.4.199.x/24	/31	16276	sendto
142.4.199.x/24	/30	16276	sendto
142.4.199.x/24	/29	16276	sendto
142.4.199.x/24	/28	16276	sendto
142.4.199.x/24	/27	16276	sendto
142.4.199.x/24	/26	16276	sendto
142.4.199.x/24	/25	16276	sendto
142.4.199.x/24	/24	16276	sendto
142.4.198.x/24	/23	16276	sendto
142.4.197.x/24	/22	16276	sendto
142.4.195.x/24	/21	16276	sendto
142.4.207.x/24	/20	16276	sendto
142.4.215.x/24	/19	16276	sendto
142.4.231.x/24	/18	11979	sendto
142.4.135.x/24	/17	36327	sendto
142.4.71.x/24	/16	18690	sendto
142.5.199.x/24	/15	UNROUTED	sendto
142.6.199.x/24	/14	UNROUTED	sendto
142.0.199.x/24	/13	7979	sendto
142.12.199.x/24	/12	855	sendto
142.20.199.x/24	/11	46626	sendto
142.36.199.x/24	/10	3633	sendto
142.68.199.x/24	/9	855	sendto
142.132.199.x/24	/8	22686	sendto

Meaning of status in Received column:

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:

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.