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Session Report

Summary:
Test run at: 2018-01-16 03:13:23 GMT
Client Prefix (v4): 162.250.232.x/24
Client AS (v4): 54540 (INCERO-HVVC)
IPv4 Probes: 102
Client Prefix (v6): 2600:387:xx::/40
Client AS (v6): 20057 (ATT-MOBILITY-LLC-AS20057)
IPv6 Probes: 62
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 nonenone
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 (162.250.232.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
162.250.232.x/24/3154540natblock
162.250.232.x/24/3054540natblock
162.250.232.x/24/2954540natblock
162.250.232.x/24/2854540natblock
162.250.232.x/24/2754540natblock
162.250.232.x/24/2654540natblock
162.250.232.x/24/2554540natblock
162.250.232.x/24/2454540natblock
162.250.233.x/24/2354540natblock
162.250.234.x/24/2254540natblock
162.250.236.x/24/21396319natblock
162.250.224.x/24/2063015natblock
162.250.248.x/24/1919445natblock
162.250.200.x/24/1840244natblock
162.250.168.x/24/1740028natblock
162.250.104.x/24/1635906natblock
162.251.232.x/24/1553340natblock
162.248.232.x/24/1453597natblock
162.254.232.x/24/13396203natblock
162.242.232.x/24/1227357natblock
162.234.232.x/24/117018natblock
162.218.232.x/24/1020454natblock
162.186.232.x/24/921928natblock
162.122.232.x/24/8UNROUTEDnatblock

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
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2600:387:xx::/40/12020057natblock
2600:387:xx::/40/11220057natblock
2600:387:xx::/40/10420057natblock
2600:387:xx::/40/9620057natblock
2600:387:xx::/40/8820057natblock
2600:387:xx::/40/8020057natblock
2600:387:xx::/40/7220057natblock
2600:387:xx::/40/6420057natblock
2600:387:xx::/40/5620057natblock
2600:387:xx::/40/4820057natblock
2600:387:xx::/40/40UNROUTEDnatblock
2600:387:80xx::/40/32UNROUTEDnatblock
2600:307:xx::/40/24UNROUTEDnatblock
2600:8387:xx::/40/16UNROUTEDnatblock

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.
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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