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Session Report

Summary:
Test run at: 2022-04-04 14:47:52 GMT
Client Prefix (v4): 187.19.101.x/24
Client AS (v4): 28130
IPv4 Probes: 60
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 (187.19.101.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.19.101.x/24/3128130natblock
187.19.101.x/24/3028130natblock
187.19.101.x/24/2928130natblock
187.19.101.x/24/2828130natblock
187.19.101.x/24/2728130natblock
187.19.101.x/24/2628130natblock
187.19.101.x/24/2528130natblock
187.19.101.x/24/2428130natblock
187.19.100.x/24/2328130natblock
187.19.103.x/24/2228130natblock
187.19.97.x/24/2128130natblock
187.19.109.x/24/2028130natblock
187.19.117.x/24/1953160natblock
187.19.69.x/24/18UNROUTEDnatblock
187.19.37.x/24/1728127natblock
187.19.229.x/24/1628126natblock
187.18.101.x/24/1522689natblock
187.17.101.x/24/147162natblock
187.23.101.x/24/1328573natblock
187.27.101.x/24/1222085natblock
187.3.101.x/24/1128573natblock
187.51.101.x/24/1010429natblock
187.83.101.x/24/926615natblock
187.147.101.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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