Session Report

Summary:

Test run at: 2017-09-18 06:25:20 GMT
Client Prefix (v4): 141.134.240.x/24
Client AS (v4): 6848 (TELENET-AS)
IPv4 Probes: 116
Client Prefix (v6): 2001:0:9dxx::/40
Client AS (v6): 6939 (HURRICANE)
IPv6 Probes: 77

Outbound spoofing summary (from the client to our server)
Source address type	IPv4		IPv6
Private - RFC1918 or ULA	rewritten		unknown
Routable	rewritten		unknown
Largest spoofable neighbor prefix length	none		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:

• ⚠️ Your host is behind a Network Address Translation (NAT) router or firewall which rewrites the source addresses of the test traffic. To test your provider's network further, you must remove the NAT/firewall/router and connect directly.

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

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
141.134.240.x/24	/31	6848	rewritten
141.134.240.x/24	/30	6848	rewritten
141.134.240.x/24	/29	6848	rewritten
141.134.240.x/24	/28	6848	rewritten
141.134.240.x/24	/27	6848	rewritten
141.134.240.x/24	/26	6848	rewritten
141.134.240.x/24	/25	6848	rewritten
141.134.240.x/24	/24	6848	rewritten
141.134.241.x/24	/23	6848	rewritten
141.134.242.x/24	/22	6848	rewritten
141.134.244.x/24	/21	6848	rewritten
141.134.248.x/24	/20	6848	rewritten
141.134.224.x/24	/19	6848	rewritten
141.134.208.x/24	/18	6848	rewritten
141.134.176.x/24	/17	6848	rewritten
141.134.112.x/24	/16	6848	rewritten
141.135.240.x/24	/15	6848	rewritten
141.132.240.x/24	/14	7575	rewritten
141.130.240.x/24	/13	41700	rewritten
141.142.240.x/24	/12	1224	rewritten
141.150.240.x/24	/11	701	rewritten
141.166.240.x/24	/10	20105	rewritten
141.198.240.x/24	/9	1761	rewritten
141.6.240.x/24	/8	15495	rewritten

Meaning of status in Received column:

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.

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
2001:4978:1fb:6400::d2	2001:388:1:5001:21c:c0ff:fea2:4a3a	no
2001:49aa:111:aa00::11	2001:388:1:5001:21c:c0ff:fea2:4a3a	no
fd11:1111:1111::1111	2001:388:1:5001:21c:c0ff:fea2:4a3a	no
2001:4978:1fb:6400::d2	2001:410:102:1::78	no
2001:49aa:111:aa00::11	2001:410:102:1::78	no
fd11:1111:1111::1111	2001:410:102:1::78	no
2001:4978:1fb:6400::d2	2001:410:90ff::5	no
2001:49aa:111:aa00::11	2001:410:90ff::5	no
fd11:1111:1111::1111	2001:410:90ff::5	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
2001:4978:1fb: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
2001:4978:1fb: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
2001:4978:1fb: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
2001:4978:1fb:6400::d2	2001:708:40:2001:21c:c0ff:fea2:4c5c	no
2001:49aa:111:aa00::11	2001:708:40:2001:21c:c0ff:fea2:4c5c	no
fd11:1111:1111::1111	2001:708:40:2001:21c:c0ff:fea2:4c5c	no
2001:4978:1fb:6400::d2	2607:f380:a44:4::4	no
2001:49aa:111:aa00::11	2607:f380:a44:4::4	no
fd11:1111:1111::1111	2607:f380:a44:4::4	no

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2001:0:9dxx::/40	/120	6939	sendto
2001:0:9dxx::/40	/112	6939	sendto
2001:0:9dxx::/40	/104	6939	sendto
2001:0:9dxx::/40	/96	6939	sendto
2001:0:9dxx::/40	/88	6939	sendto
2001:0:9dxx::/40	/80	6939	sendto
2001:0:9dxx::/40	/72	6939	sendto
2001:0:9dxx::/40	/64	6939	sendto
2001:0:9dxx::/40	/56	6939	sendto
2001:0:9dxx::/40	/48	6939	sendto
2001:0:9dxx::/40	/40	6939	sendto
2001:0:1dxx::/40	/32	6939	sendto
2001:80:9dxx::/40	/24	UNROUTED	sendto
2001:8000:9dxx::/40	/16	1221	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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