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: 2024-04-12 20:27:18 GMT
Client Prefix (v4): 174.163.76.x/24
Client AS (v4): 7922 (COMCAST-7922)
Client Prefix (v6): 2001:558:60xx::/40
Client AS (v6): 7922 (COMCAST-7922)
IPv6 Probes: 56

Outbound spoofing summary (from the client to our server)

Source address type IPv6

Private - ULA 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.

Outbound spoofing summary (from the client to our server)
Source address type	IPv6
Private - ULA	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.

IPv6 probes:

Spoofed source address Destination Received
2001:48d0:101:501::159 2001:48d0:101:501::247 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

Spoofed source address	Destination	Received
2001:48d0:101:501::159	2001:48d0:101:501::247	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

IPv6 Adjacent Netblock Testing:

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

2001:558:60xx::/40 /120 7922 sendto
2001:558:60xx::/40 /112 7922 sendto
2001:558:60xx::/40 /104 7922 sendto
2001:558:60xx::/40 /96 7922 sendto
2001:558:60xx::/40 /88 7922 sendto
2001:558:60xx::/40 /80 7922 sendto
2001:558:60xx::/40 /72 7922 sendto
2001:558:60xx::/40 /64 7922 sendto
2001:558:60xx::/40 /56 7922 sendto
2001:558:60xx::/40 /48 7922 sendto
2001:558:60xx::/40 /40 7922 sendto
2001:558:e0xx::/40 /32 7922 sendto
2001:5d8:60xx::/40 /24 3742 sendto
2001:8558:60xx::/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.

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2001:558:60xx::/40	/120	7922	sendto
2001:558:60xx::/40	/112	7922	sendto
2001:558:60xx::/40	/104	7922	sendto
2001:558:60xx::/40	/96	7922	sendto
2001:558:60xx::/40	/88	7922	sendto
2001:558:60xx::/40	/80	7922	sendto
2001:558:60xx::/40	/72	7922	sendto
2001:558:60xx::/40	/64	7922	sendto
2001:558:60xx::/40	/56	7922	sendto
2001:558:60xx::/40	/48	7922	sendto
2001:558:60xx::/40	/40	7922	sendto
2001:558:e0xx::/40	/32	7922	sendto
2001:5d8:60xx::/40	/24	3742	sendto
2001:8558:60xx::/40	/16	1221	sendto

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.

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