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Session Report

Summary:
Test run at: 2021-08-18 01:29:07 GMT
Client Prefix (v4): 47.21.54.x/24
Client AS (v4): 6128 (CABLE-NET-1)
IPv4 Probes: 66
Client Prefix (v6): 2603:8080:93xx::/40
Client AS (v6): 11427 (TWC-11427-TEXAS)
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

Meaning of result status in column:

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 (47.21.54.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
47.21.54.x/24/316128natblock
47.21.54.x/24/306128natblock
47.21.54.x/24/296128natblock
47.21.54.x/24/286128natblock
47.21.54.x/24/276128natblock
47.21.54.x/24/266128natblock
47.21.54.x/24/256128natblock
47.21.54.x/24/246128natblock
47.21.55.x/24/236128natblock
47.21.52.x/24/226128natblock
47.21.50.x/24/216128natblock
47.21.62.x/24/206128natblock
47.21.38.x/24/196128natblock
47.21.22.x/24/186128natblock
47.21.118.x/24/176128natblock
47.21.182.x/24/166128natblock
47.20.54.x/24/156128natblock
47.23.54.x/24/146128natblock
47.17.54.x/24/136128natblock
47.29.54.x/24/1255836natblock
47.5.54.x/24/1133588natblock
47.53.54.x/24/1030722natblock
47.85.54.x/24/9UNROUTEDnatblock
47.149.54.x/24/85650natblock

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::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
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
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2603:8080:93xx::/40/12011427yes
2603:8080:93xx::/40/11211427yes
2603:8080:93xx::/40/10411427yes
2603:8080:93xx::/40/9611427yes
2603:8080:93xx::/40/8811427yes
2603:8080:93xx::/40/8011427yes
2603:8080:93xx::/40/7211427yes
2603:8080:93xx::/40/6411427yes
2603:8080:93xx::/40/5611427no
2603:8080:93xx::/40/4811427no
2603:8080:93xx::/40/4011427no
2603:8080:13xx::/40/3211427no
2603:8000:93xx::/40/2420001no
2603:80:93xx::/40/16UNROUTEDno

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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