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Session Report

Summary:
Test run at: 2022-01-13 11:49:53 GMT
Client Prefix (v4): 185.5.200.x/24
Client AS (v4): 59715 (SBTAP-AS)
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

Meaning of result status in column:

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.5.200.x/24/3159715sendto
185.5.200.x/24/3059715sendto
185.5.200.x/24/2959715sendto
185.5.200.x/24/2859715sendto
185.5.200.x/24/2759715sendto
185.5.200.x/24/2659715sendto
185.5.200.x/24/2559715sendto
185.5.200.x/24/2459715natblock
185.5.201.x/24/2359715sendto
185.5.202.x/24/2259715sendto
185.5.204.x/24/21UNROUTEDsendto
185.5.192.x/24/20206054sendto
185.5.216.x/24/1931304sendto
185.5.232.x/24/1859720sendto
185.5.136.x/24/1747764sendto
185.5.72.x/24/1635000sendto
185.4.200.x/24/1544002sendto
185.7.200.x/24/1431484sendto
185.1.200.x/24/13UNROUTEDsendto
185.13.200.x/24/1234977sendto
185.21.200.x/24/11UNROUTEDsendto
185.37.200.x/24/10UNROUTEDsendto
185.69.200.x/24/962317sendto
185.133.200.x/24/8209344sendto

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.
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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