Session Report

Summary:

Test run at: 2018-09-05 17:03:54 GMT
Client Prefix (v4): 173.174.53.x/24
Client AS (v4): 11427 (TWC-11427-TEXAS)
Client Prefix (v6): 2605:6000:10xx::/40
Client AS (v6): 11427 (TWC-11427-TEXAS)
IPv6 Probes: 82

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

IPv6 probes:

Spoofed source address	Destination	Received
2001:48d0:101:501:ec4:7aff:fea8:71a8	2001:48d0:101:501::242	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

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2605:6000:10xx::/40	/120	11427	yes
2605:6000:10xx::/40	/112	11427	yes
2605:6000:10xx::/40	/104	11427	yes
2605:6000:10xx::/40	/96	11427	yes
2605:6000:10xx::/40	/88	11427	yes
2605:6000:10xx::/40	/80	11427	yes
2605:6000:10xx::/40	/72	11427	yes
2605:6000:10xx::/40	/64	11427	yes
2605:6000:10xx::/40	/56	11427	no
2605:6000:10xx::/40	/48	11427	no
2605:6000:10xx::/40	/40	11427	no
2605:6000:90xx::/40	/32	11427	no
2605:6080:10xx::/40	/24	62833	no
2605:e000:10xx::/40	/16	20001	no

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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