Session Report

Summary:

Test run at: 2020-06-18 13:33:11 GMT
Client Prefix (v4): 185.219.221.x/24
Client AS (v4): 39378 (servinga)
IPv4 Probes: 75
Client Prefix (v6): 2a0b:7140:xx::/40
Client AS (v6): 39378 (servinga)
IPv6 Probes: 68

Outbound spoofing summary (from the client to our server)
Source address type	IPv4		IPv6
Private - RFC1918 or ULA	blocked		received
Routable	✔	received	received
Largest spoofable neighbor prefix length	/8		/16

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 Adjacent Netblock Testing:

Your host (185.219.221.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
185.219.221.x/24	/31	39378	yes
185.219.221.x/24	/30	39378	yes
185.219.221.x/24	/29	39378	yes
185.219.221.x/24	/28	39378	yes
185.219.221.x/24	/27	39378	yes
185.219.221.x/24	/26	39378	yes
185.219.221.x/24	/25	39378	yes
185.219.221.x/24	/24	39378	yes
185.219.220.x/24	/23	39378	yes
185.219.223.x/24	/22	39378	yes
185.219.217.x/24	/21	201453	yes
185.219.213.x/24	/20	201699	no
185.219.205.x/24	/19	24904	no
185.219.253.x/24	/18	42366	no
185.219.157.x/24	/17	205401	no
185.219.93.x/24	/16	UNROUTED	no
185.218.221.x/24	/15	206246	yes
185.217.221.x/24	/14	205174	yes
185.223.221.x/24	/13	201942	no
185.211.221.x/24	/12	197540	yes
185.203.221.x/24	/11	206866	yes
185.251.221.x/24	/10	42498	yes
185.155.221.x/24	/9	30823	yes
185.91.221.x/24	/8	199792	yes

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
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 10 IP hop(s).

IPv6 probes:

Spoofed source address	Destination	Received
2001:48d0:101:501::159	2001:48d0:101:501::242	yes
2001:4978:1fb:6400::d2	2001:48d0:101:501::242	yes
2001:49aa:111:aa00::11	2001:48d0:101:501::242	no
fd11:1111:1111::1111	2001:48d0:101:501::242	yes
2001:48d0:101:501::159	2001:48d0:101:501::247	yes
2001:4978:1fb:6400::d2	2001:48d0:101:501::247	no
2001:49aa:111:aa00::11	2001:48d0:101:501::247	yes
fd11:1111:1111::1111	2001:48d0:101:501::247	yes
2001:48d0:101:501::159	2001:610:510:115:192:42:115:98	yes
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
2001:48d0:101:501::159	2001:630:212:225:225:90ff:fe0c:45a6	yes
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
2001:48d0:101:501::159	2001:770:18:7:225:90ff:fe0c:acb4	yes
2001:4978:1fb:6400::d2	2001:770:18:7:225:90ff:fe0c:acb4	no
2001:49aa:111:aa00::11	2001:770:18:7:225:90ff:fe0c:acb4	no
fd11:1111:1111::1111	2001:770:18:7:225:90ff:fe0c:acb4	no
2001:48d0:101:501::159	2001:df0:4:800:21c:c0ff:feb2:ad5f	yes
2001:4978:1fb:6400::d2	2001:df0:4:800:21c:c0ff:feb2:ad5f	no
2001:49aa:111:aa00::11	2001:df0:4:800:21c:c0ff:feb2:ad5f	no
fd11:1111:1111::1111	2001:df0:4:800:21c:c0ff:feb2:ad5f	no

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2a0b:7140:xx::/40	/120	39378	yes
2a0b:7140:xx::/40	/112	39378	yes
2a0b:7140:xx::/40	/104	39378	yes
2a0b:7140:xx::/40	/96	39378	yes
2a0b:7140:xx::/40	/88	39378	yes
2a0b:7140:xx::/40	/80	39378	yes
2a0b:7140:xx::/40	/72	39378	yes
2a0b:7140:xx::/40	/64	39378	yes
2a0b:7140:xx::/40	/56	39378	yes
2a0b:7140:xx::/40	/48	39378	yes
2a0b:7140:xx::/40	/40	UNROUTED	no
2a0b:7140:80xx::/40	/32	UNROUTED	yes
2a0b:71c0:xx::/40	/24	UNROUTED	yes
2a0b:f140:xx::/40	/16	UNROUTED	yes

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)

Summary:

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

Feedback:

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