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Session Report

Summary:
Test run at: 2022-04-20 08:18:40 GMT
Client Prefix (v4): 192.166.33.x/24
Client AS (v4): 50661 (TELKABSPZOO-AS)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
Largest spoofable neighbor prefix length /10
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 (192.166.33.x/24) can spoof 4194303 neighboring addresses (within your /10 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
192.166.33.x/24/3150661no
192.166.33.x/24/3050661yes
192.166.33.x/24/2950661yes
192.166.33.x/24/2850661yes
192.166.33.x/24/2750661no
192.166.33.x/24/2650661no
192.166.33.x/24/2550661yes
192.166.33.x/24/2450661yes
192.166.32.x/24/2350661yes
192.166.35.x/24/2250661no
192.166.37.x/24/21210247yes
192.166.41.x/24/2013101no
192.166.49.x/24/19UNROUTEDno
192.166.1.x/24/188881yes
192.166.97.x/24/1751088no
192.166.161.x/24/169007yes
192.167.33.x/24/15137no
192.164.33.x/24/148447no
192.162.33.x/24/1349827yes
192.174.33.x/24/1216411no
192.182.33.x/24/115650no
192.134.33.x/24/102200yes
192.230.33.x/24/9UNROUTEDno
192.38.33.x/24/81835no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

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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