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Session Report

Summary:
Test run at: 2021-12-22 13:02:44 GMT
Client Prefix (v4): 95.134.189.x/24
Client AS (v4): 0
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 (95.134.189.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
95.134.189.x/24/31UNROUTEDrewritten
95.134.189.x/24/30UNROUTEDnatblock
95.134.189.x/24/29UNROUTEDnatblock
95.134.189.x/24/28UNROUTEDnatblock
95.134.189.x/24/27UNROUTEDnatblock
95.134.189.x/24/26UNROUTEDnatblock
95.134.189.x/24/25UNROUTEDnatblock
95.134.189.x/24/24UNROUTEDnatblock
95.134.188.x/24/23UNROUTEDnatblock
95.134.191.x/24/226849natblock
95.134.185.x/24/216849natblock
95.134.181.x/24/206849natblock
95.134.173.x/24/196849natblock
95.134.157.x/24/186849natblock
95.134.253.x/24/176849natblock
95.134.61.x/24/166849natblock
95.135.189.x/24/156849natblock
95.132.189.x/24/146849natblock
95.130.189.x/24/13212882natblock
95.142.189.x/24/1230848natblock
95.150.189.x/24/1112576natblock
95.166.189.x/24/103292natblock
95.198.189.x/24/93301natblock
95.6.189.x/24/89121natblock

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.
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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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