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Session Report

Summary:
Test run at: 2021-06-13 21:42:39 GMT
Client Prefix (v4): 170.78.175.x/24
Client AS (v4): 266298
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
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 (170.78.175.x/24) can spoof 4194303 neighboring addresses (within your /10 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
170.78.175.x/24/31266298yes
170.78.175.x/24/30266298yes
170.78.175.x/24/29266298yes
170.78.175.x/24/28266298yes
170.78.175.x/24/27266298yes
170.78.175.x/24/26266298yes
170.78.175.x/24/25266298yes
170.78.175.x/24/24266298yes
170.78.174.x/24/23266298yes
170.78.173.x/24/22266298yes
170.78.171.x/24/21266292yes
170.78.167.x/24/2028658yes
170.78.191.x/24/19265515yes
170.78.143.x/24/1852892yes
170.78.239.x/24/17264909yes
170.78.47.x/24/16264791yes
170.79.175.x/24/15266303yes
170.76.175.x/24/1432866yes
170.74.175.x/24/13UNROUTEDnatblock
170.70.175.x/24/1210420yes
170.94.175.x/24/1121852yes
170.110.175.x/24/1033343yes
170.14.175.x/24/9UNROUTEDnatblock
170.206.175.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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