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Session Report

Summary:
Test run at: 2022-08-26 07:58:24 GMT
Client Prefix (v4): 172.83.43.x/24
Client AS (v4): 46562 (PERFORMIVE)
IPv4 Probes: 60
Client Prefix (v6): 2603:6000:d8xx::/40
Client AS (v6): 10796 (TWC-10796-MIDWEST)
IPv6 Probes: 52
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 (172.83.43.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
172.83.43.x/24/3146562natblock
172.83.43.x/24/3046562natblock
172.83.43.x/24/2946562natblock
172.83.43.x/24/2846562natblock
172.83.43.x/24/2746562natblock
172.83.43.x/24/2646562natblock
172.83.43.x/24/2546562natblock
172.83.43.x/24/2446562natblock
172.83.42.x/24/2346562natblock
172.83.41.x/24/2246562natblock
172.83.47.x/24/2146562natblock
172.83.35.x/24/2062917natblock
172.83.59.x/24/19397569natblock
172.83.11.x/24/18394996natblock
172.83.107.x/24/17395309natblock
172.83.171.x/24/16397168natblock
172.82.43.x/24/15399279natblock
172.81.43.x/24/1435913natblock
172.87.43.x/24/13UNROUTEDnatblock
172.91.43.x/24/1220001natblock
172.67.43.x/24/1113335natblock
172.115.43.x/24/1020001natblock
172.19.43.x/24/9UNROUTEDnatblock
172.211.43.x/24/88075natblock

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
2603:6000:d8xx::/40/12010796yes
2603:6000:d8xx::/40/11210796yes
2603:6000:d8xx::/40/10410796yes
2603:6000:d8xx::/40/9610796yes
2603:6000:d8xx::/40/8810796yes
2603:6000:d8xx::/40/8010796yes
2603:6000:d8xx::/40/7210796yes
2603:6000:d8xx::/40/6410796yes
2603:6000:d8xx::/40/5610796no
2603:6000:d8xx::/40/4810796no
2603:6000:d8xx::/40/4010796no
2603:6000:58xx::/40/3210796no
2603:6080:d8xx::/40/2411426no
2603:e000:d8xx::/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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