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Session Report

Summary:
Test run at: 2022-01-24 10:09:00 GMT
Client Prefix (v4): 152.96.1.x/24
Client AS (v4): 559 (SWITCH)
IPv4 Probes: 63
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 (152.96.1.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
152.96.1.x/24/31559natblock
152.96.1.x/24/30559natblock
152.96.1.x/24/29559natblock
152.96.1.x/24/28559natblock
152.96.1.x/24/27559natblock
152.96.1.x/24/26559natblock
152.96.1.x/24/25559natblock
152.96.1.x/24/24559natblock
152.96.0.x/24/23559natblock
152.96.3.x/24/22559natblock
152.96.5.x/24/21559natblock
152.96.9.x/24/20559natblock
152.96.17.x/24/19559natblock
152.96.33.x/24/18559natblock
152.96.65.x/24/17559natblock
152.96.129.x/24/16559natblock
152.97.1.x/24/1531975natblock
152.98.1.x/24/147575natblock
152.100.1.x/24/13UNROUTEDnatblock
152.104.1.x/24/129584natblock
152.112.1.x/24/112018natblock
152.64.1.x/24/10UNROUTEDnatblock
152.32.1.x/24/981natblock
152.224.1.x/24/8UNROUTEDnatblock

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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