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Session Report

Summary:
Test run at: 2021-11-10 14:16:17 GMT
Client Prefix (v4): 185.86.202.x/24
Client AS (v4): 48544 (TECNOADSL-AS)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /24
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 (185.86.202.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.86.202.x/24/3148544yes
185.86.202.x/24/3048544yes
185.86.202.x/24/2948544yes
185.86.202.x/24/2848544yes
185.86.202.x/24/2748544yes
185.86.202.x/24/2648544yes
185.86.202.x/24/2548544yes
185.86.202.x/24/2448544yes
185.86.203.x/24/2348544natblock
185.86.200.x/24/2248544natblock
185.86.206.x/24/21201073natblock
185.86.194.x/24/20212749natblock
185.86.218.x/24/19UNROUTEDnatblock
185.86.234.x/24/1856357natblock
185.86.138.x/24/17201081natblock
185.86.74.x/24/1657970natblock
185.87.202.x/24/1548635natblock
185.84.202.x/24/14UNROUTEDnatblock
185.82.202.x/24/1360117natblock
185.94.202.x/24/1249221natblock
185.70.202.x/24/116762natblock
185.118.202.x/24/102614natblock
185.22.202.x/24/9197712natblock
185.214.202.x/24/849088natblock

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 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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