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Session Report

Summary:
Test run at: 2017-07-31 00:48:13 GMT
Client Prefix (v4): 24.55.44.x/24
Client AS (v4): 11427 (TWC-11427-TEXAS)
IPv4 Probes: 117
Client Prefix (v6): 2605:6000:10xx::/40
Client AS (v6): 11427 (TWC-11427-TEXAS)
IPv6 Probes: 77
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 (24.55.44.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
24.55.44.x/24/3111427natblock
24.55.44.x/24/3011427natblock
24.55.44.x/24/2911427natblock
24.55.44.x/24/2811427natblock
24.55.44.x/24/2711427natblock
24.55.44.x/24/2611427natblock
24.55.44.x/24/2511427natblock
24.55.44.x/24/2411427natblock
24.55.45.x/24/2311427natblock
24.55.46.x/24/2211427natblock
24.55.40.x/24/2111427natblock
24.55.36.x/24/2011427natblock
24.55.60.x/24/1911427natblock
24.55.12.x/24/1811427natblock
24.55.108.x/24/1736423natblock
24.55.172.x/24/1614638natblock
24.54.44.x/24/1511290natblock
24.53.44.x/24/145769natblock
24.51.44.x/24/1330612natblock
24.63.44.x/24/127922natblock
24.39.44.x/24/1111351natblock
24.23.44.x/24/107922natblock
24.119.44.x/24/9UNROUTEDnatblock
24.183.44.x/24/820115natblock

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 probes:
Spoofed source addressDestinationReceived
2001:4978:1fb:6400::d22001:388:1:5001:21c:c0ff:fea2:4a3ano
2001:49aa:111:aa00::112001:388:1:5001:21c:c0ff:fea2:4a3ano
fd11:1111:1111::11112001:388:1:5001:21c:c0ff:fea2:4a3ano
2001:4978:1fb:6400::d22001:410:102:1::78no
2001:49aa:111:aa00::112001:410:102:1::78no
fd11:1111:1111::11112001:410:102:1::78no
2001:4978:1fb:6400::d22001:410:90ff::5no
2001:49aa:111:aa00::112001:410:90ff::5no
fd11:1111:1111::11112001:410:90ff::5no
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
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:4978:1fb: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
2001:4978:1fb: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
2001:4978:1fb:6400::d22001:708:40:2001:21c:c0ff:fea2:4c5cno
2001:49aa:111:aa00::112001:708:40:2001:21c:c0ff:fea2:4c5cno
fd11:1111:1111::11112001:708:40:2001:21c:c0ff:fea2:4c5cno
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2605:6000:10xx::/40/12011427yes
2605:6000:10xx::/40/11211427yes
2605:6000:10xx::/40/10411427yes
2605:6000:10xx::/40/9611427yes
2605:6000:10xx::/40/8811427yes
2605:6000:10xx::/40/8011427yes
2605:6000:10xx::/40/7211427yes
2605:6000:10xx::/40/6411427yes
2605:6000:10xx::/40/5611427no
2605:6000:10xx::/40/4811427no
2605:6000:10xx::/40/4011427no
2605:6000:90xx::/40/3211427no
2605:6080:10xx::/40/2462833no
2605:e000:10xx::/40/1620001no

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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