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Session Report

Summary:
Test run at: 2021-10-13 22:28:17 GMT
Client Prefix (v4): 187.109.235.x/24
Client AS (v4): 262732
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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.

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 (187.109.235.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.109.235.x/24/31262732natblock
187.109.235.x/24/30262732natblock
187.109.235.x/24/29262732natblock
187.109.235.x/24/28262732natblock
187.109.235.x/24/27262732natblock
187.109.235.x/24/26262732natblock
187.109.235.x/24/25262732natblock
187.109.235.x/24/24262732natblock
187.109.234.x/24/23262732natblock
187.109.233.x/24/22262732natblock
187.109.239.x/24/21262732natblock
187.109.227.x/24/20262732natblock
187.109.251.x/24/19262497natblock
187.109.203.x/24/1853115natblock
187.109.171.x/24/17263579natblock
187.109.107.x/24/1628158natblock
187.108.235.x/24/15UNROUTEDnatblock
187.111.235.x/24/1428220natblock
187.105.235.x/24/1328573natblock
187.101.235.x/24/1227699natblock
187.125.235.x/24/117738natblock
187.77.235.x/24/107738natblock
187.45.235.x/24/927715natblock
187.237.235.x/24/88151natblock

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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