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Session Report

Summary:
Test run at: 2019-03-13 16:55:18 GMT
Client Prefix (v4): 83.137.226.x/24
Client AS (v4): 31742 (SOTACONNECT)
IPv4 Probes: 116
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable blocked
Largest spoofable neighbor prefix length /21
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.

Warnings:

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 (83.137.226.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
83.137.226.x/24/3131742yes
83.137.226.x/24/3031742yes
83.137.226.x/24/2931742yes
83.137.226.x/24/2831742yes
83.137.226.x/24/2731742yes
83.137.226.x/24/2631742yes
83.137.226.x/24/2531742yes
83.137.226.x/24/2431742yes
83.137.227.x/24/2331742yes
83.137.224.x/24/2231742yes
83.137.230.x/24/2131742yes
83.137.234.x/24/2041497natblock
83.137.242.x/24/1948702natblock
83.137.194.x/24/1834233natblock
83.137.162.x/24/1712445natblock
83.137.98.x/24/1643503natblock
83.136.226.x/24/1531306natblock
83.139.226.x/24/14UNROUTEDnatblock
83.141.226.x/24/1321502natblock
83.129.226.x/24/1212312natblock
83.153.226.x/24/1112322natblock
83.169.226.x/24/1031195natblock
83.201.226.x/24/93215natblock
83.9.226.x/24/85617natblock

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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