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Session Report

Summary:
Test run at: 2022-06-01 19:55:35 GMT
Client Prefix (v4): 131.108.164.x/24
Client AS (v4): 61678
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /8
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 (131.108.164.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
131.108.164.x/24/3161678natblock
131.108.164.x/24/3061678natblock
131.108.164.x/24/2961678yes
131.108.164.x/24/2861678yes
131.108.164.x/24/2761678yes
131.108.164.x/24/2661678yes
131.108.164.x/24/2561678yes
131.108.164.x/24/2461678yes
131.108.165.x/24/2361678yes
131.108.166.x/24/2261678yes
131.108.160.x/24/2161675yes
131.108.172.x/24/20264386yes
131.108.180.x/24/1961691yes
131.108.132.x/24/18263010yes
131.108.228.x/24/17UNROUTEDnatblock
131.108.36.x/24/16UNROUTEDnatblock
131.109.164.x/24/1514464yes
131.110.164.x/24/14UNROUTEDnatblock
131.104.164.x/24/1331886yes
131.100.164.x/24/1261642yes
131.124.164.x/24/11UNROUTEDnatblock
131.76.164.x/24/10721yes
131.44.164.x/24/9385yes
131.236.164.x/24/823859yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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 10 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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