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Session Report

Summary:
Test run at: 2021-10-28 16:41:03 GMT
Client Prefix (v4): 142.231.1.x/24
Client AS (v4): 271 (BCNET-AS)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length none
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 (142.231.1.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
142.231.1.x/24/31271natblock
142.231.1.x/24/30271natblock
142.231.1.x/24/29271natblock
142.231.1.x/24/28271natblock
142.231.1.x/24/27271natblock
142.231.1.x/24/26271natblock
142.231.1.x/24/25271natblock
142.231.1.x/24/24271natblock
142.231.0.x/24/23271natblock
142.231.3.x/24/22271natblock
142.231.5.x/24/21271natblock
142.231.9.x/24/20271natblock
142.231.17.x/24/19271natblock
142.231.33.x/24/18393249natblock
142.231.65.x/24/17393249natblock
142.231.129.x/24/16271natblock
142.230.1.x/24/1519351natblock
142.229.1.x/24/14393952natblock
142.227.1.x/24/1323307natblock
142.239.1.x/24/12UNROUTEDnatblock
142.247.1.x/24/1125019natblock
142.199.1.x/24/1016623natblock
142.167.1.x/24/9855natblock
142.103.1.x/24/8393249natblock

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.
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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