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Session Report

Summary:
Test run at: 2021-04-02 19:37:45 GMT
Client Prefix (v4): 34.122.240.x/24
Client AS (v4): 15169 (GOOGLE)
IPv4 Probes: 66
Client Prefix (v6): 2400:adcc:1xx::/40
Client AS (v6): 9541 (CYBERNET-AP)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length none/64
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.
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 (34.122.240.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
34.122.240.x/24/3115169natblock
34.122.240.x/24/3015169natblock
34.122.240.x/24/2915169natblock
34.122.240.x/24/2815169natblock
34.122.240.x/24/2715169natblock
34.122.240.x/24/2615169natblock
34.122.240.x/24/2515169natblock
34.122.240.x/24/2415169natblock
34.122.241.x/24/2315169natblock
34.122.242.x/24/2215169natblock
34.122.244.x/24/2115169natblock
34.122.248.x/24/2015169natblock
34.122.224.x/24/1915169natblock
34.122.208.x/24/1815169natblock
34.122.176.x/24/1715169natblock
34.122.112.x/24/1615169natblock
34.123.240.x/24/1515169natblock
34.120.240.x/24/1415169natblock
34.126.240.x/24/1315169natblock
34.114.240.x/24/1219527natblock
34.106.240.x/24/1115169natblock
34.90.240.x/24/1015169natblock
34.58.240.x/24/9UNROUTEDnatblock
34.250.240.x/24/816509natblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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 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.

  

  
IPv6 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:48d0:101:501::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2400:adcc:1xx::/40/1209541yes
2400:adcc:1xx::/40/1129541yes
2400:adcc:1xx::/40/1049541yes
2400:adcc:1xx::/40/969541yes
2400:adcc:1xx::/40/889541yes
2400:adcc:1xx::/40/809541yes
2400:adcc:1xx::/40/729541yes
2400:adcc:1xx::/40/649541yes
2400:adcc:1xx::/40/569541no
2400:adcc:1xx::/40/489541no
2400:adcc:1xx::/40/409541no
2400:adcc:81xx::/40/32UNROUTEDno
2400:ad4c:1xx::/40/24UNROUTEDno
2400:2dcc:1xx::/40/1617676no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets 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:
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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