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Session Report

Summary:
Test run at: 2023-09-25 18:07:59 GMT
Client Prefix (v4): 168.232.219.x/24
Client AS (v4): 263569
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /12
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 (168.232.219.x/24) can spoof 1048575 neighboring addresses (within your /12 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
168.232.219.x/24/31263569natblock
168.232.219.x/24/30263569yes
168.232.219.x/24/29263569yes
168.232.219.x/24/28263569yes
168.232.219.x/24/27263569yes
168.232.219.x/24/26263569yes
168.232.219.x/24/25263569yes
168.232.219.x/24/24263569yes
168.232.218.x/24/23263569yes
168.232.217.x/24/22263569yes
168.232.223.x/24/21264951yes
168.232.211.x/24/20264956yes
168.232.203.x/24/19264954yes
168.232.251.x/24/18264701yes
168.232.155.x/24/17262293yes
168.232.91.x/24/16264697yes
168.233.219.x/24/15UNROUTEDnatblock
168.234.219.x/24/14UNROUTEDnatblock
168.236.219.x/24/133136yes
168.224.219.x/24/1229487yes
168.248.219.x/24/11UNROUTEDnatblock
168.200.219.x/24/10UNROUTEDnatblock
168.168.219.x/24/9UNROUTEDnatblock
168.104.219.x/24/8UNROUTEDnatblock

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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