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Session Report

Summary:
Test run at: 2021-06-25 23:09:55 GMT
Client Prefix (v4): 187.60.36.x/24
Client AS (v4): 28368
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 (187.60.36.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.60.36.x/24/3128368natblock
187.60.36.x/24/3028368natblock
187.60.36.x/24/2928368natblock
187.60.36.x/24/2828368natblock
187.60.36.x/24/2728368natblock
187.60.36.x/24/2628368natblock
187.60.36.x/24/2528368natblock
187.60.36.x/24/2428368natblock
187.60.37.x/24/2328368natblock
187.60.38.x/24/2228368natblock
187.60.32.x/24/2128368natblock
187.60.44.x/24/2028368natblock
187.60.52.x/24/1928151natblock
187.60.4.x/24/18UNROUTEDnatblock
187.60.100.x/24/17262907natblock
187.60.164.x/24/1628156natblock
187.61.36.x/24/1519089natblock
187.62.36.x/24/1422689natblock
187.56.36.x/24/1327699natblock
187.52.36.x/24/128167natblock
187.44.36.x/24/1128202natblock
187.28.36.x/24/104230natblock
187.124.36.x/24/97738natblock
187.188.36.x/24/817072natblock

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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