Session Report

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| Data: Stats Summary Recent Tests Remediation Results by AS Results by Country Results by Provider |

Summary:

Test run at: 2017-12-05 19:34:17 GMT
Client Prefix (v6): 2601:c6:xx::/40
Client AS (v6): 6939 (HURRICANE)
IPv6 Probes: 65

Outbound spoofing summary (from the client to our server)

Source address type IPv6

Private - ULA rewritten

Routable rewritten

Largest spoofable neighbor prefix length /64

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.

Outbound spoofing summary (from the client to our server)
Source address type	IPv6
Private - ULA	rewritten
Routable	rewritten
Largest spoofable neighbor prefix length	/64

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.

IPv6 probes:

Spoofed source address Destination Received
fd11:1111:1111::1111 2001:48d0:101:501::242 no
2001:49aa:111:aa00::11 2001:48d0:101:501::247 no

Spoofed source address	Destination	Received
fd11:1111:1111::1111	2001:48d0:101:501::242	no
2001:49aa:111:aa00::11	2001:48d0:101:501::247	no

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon) Prefix
Length ASN of spoofed
source address Received

2601:c6:xx::/40 /120 7922 rewritten

2601:c6:xx::/40 /112 7922 rewritten

2601:c6:xx::/40 /104 7922 rewritten

2601:c6:xx::/40 /96 7922 rewritten

2601:c6:xx::/40 /88 7922 rewritten

2601:c6:xx::/40 /80 7922 no

2601:c6:xx::/40 /72 7922 rewritten

2601:c6:xx::/40 /64 7922 yes

2601:c6:xx::/40 /56 7922 no

2601:c6:xx::/40 /48 7922 rewritten

2601:c6:xx::/40 /40 7922 rewritten

2601:c6:80xx::/40 /32 7922 rewritten

2601:46:xx::/40 /24 7922 no

2601:80c6:xx::/40 /16 UNROUTED rewritten

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
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.

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2601:c6:xx::/40	/120	7922	rewritten
2601:c6:xx::/40	/112	7922	rewritten
2601:c6:xx::/40	/104	7922	rewritten
2601:c6:xx::/40	/96	7922	rewritten
2601:c6:xx::/40	/88	7922	rewritten
2601:c6:xx::/40	/80	7922	no
2601:c6:xx::/40	/72	7922	rewritten
2601:c6:xx::/40	/64	7922	yes
2601:c6:xx::/40	/56	7922	no
2601:c6:xx::/40	/48	7922	rewritten
2601:c6:xx::/40	/40	7922	rewritten
2601:c6:80xx::/40	/32	7922	rewritten
2601:46:xx::/40	/24	7922	no
2601:80c6:xx::/40	/16	UNROUTED	rewritten

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.

Last Modified

no	Packets spoofed from adjacent netblock were not received, probably due to blocking
yes	Packets spoofed from adjacent netblock were received
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.