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Session Report

Summary:
Test run at: 2021-12-17 14:31:52 GMT
Client Prefix (v4): 200.10.166.x/24
Client AS (v4): 11269 (LINKBERMUDA)
IPv4 Probes: 63
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 (200.10.166.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.10.166.x/24/3111269natblock
200.10.166.x/24/3011269natblock
200.10.166.x/24/2911269natblock
200.10.166.x/24/2811269natblock
200.10.166.x/24/2711269natblock
200.10.166.x/24/2611269natblock
200.10.166.x/24/2511269natblock
200.10.166.x/24/2411269natblock
200.10.167.x/24/2364113natblock
200.10.164.x/24/22264648natblock
200.10.162.x/24/21UNROUTEDnatblock
200.10.174.x/24/20264718natblock
200.10.182.x/24/1927952natblock
200.10.134.x/24/1861934natblock
200.10.230.x/24/1727733natblock
200.10.38.x/24/16264850natblock
200.11.166.x/24/158048natblock
200.8.166.x/24/1421826natblock
200.14.166.x/24/13UNROUTEDnatblock
200.2.166.x/24/1227775natblock
200.26.166.x/24/1152281natblock
200.42.166.x/24/107418natblock
200.74.166.x/24/914259natblock
200.138.166.x/24/88167natblock

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 able to spoof routable, non-adjacent source addresses through the first 1 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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