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Session Report

Summary:
Test run at: 2021-06-30 17:13:44 GMT
Client Prefix (v4): 87.244.230.x/24
Client AS (v4): 31117 (ENERGOTEL-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 /18

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 (87.244.230.x/24) can spoof 16383 neighboring addresses (within your /18 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
87.244.230.x/24/3131117yes
87.244.230.x/24/3031117yes
87.244.230.x/24/2931117yes
87.244.230.x/24/2831117yes
87.244.230.x/24/2731117yes
87.244.230.x/24/2631117yes
87.244.230.x/24/2531117yes
87.244.230.x/24/2431117yes
87.244.231.x/24/2331117yes
87.244.228.x/24/2231117yes
87.244.226.x/24/2131117yes
87.244.238.x/24/2031117yes
87.244.246.x/24/1931117yes
87.244.198.x/24/1831117yes
87.244.166.x/24/1721310natblock
87.244.102.x/24/168681natblock
87.245.230.x/24/159002natblock
87.246.230.x/24/1412346natblock
87.240.230.x/24/136661natblock
87.252.230.x/24/1221062natblock
87.228.230.x/24/116866natblock
87.212.230.x/24/1050266natblock
87.180.230.x/24/93320natblock
87.116.230.x/24/821021natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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 able to spoof routable, non-adjacent source addresses through the first 4 IP hop(s).
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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