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Session Report

Summary:
Test run at: 2021-07-30 20:05:45 GMT
Client Prefix (v4): 172.107.198.x/24
Client AS (v4): 40676 (AS40676)
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 /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.
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.
Connection timed out (110)

IPv4 Adjacent Netblock Testing:

Your host (172.107.198.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
172.107.198.x/24/3140676yes
172.107.198.x/24/3040676yes
172.107.198.x/24/2940676yes
172.107.198.x/24/2840676yes
172.107.198.x/24/2740676yes
172.107.198.x/24/2640676yes
172.107.198.x/24/2540676yes
172.107.198.x/24/2440676yes
172.107.199.x/24/2340676yes
172.107.196.x/24/2240676yes
172.107.194.x/24/2140676yes
172.107.206.x/24/2040676yes
172.107.214.x/24/1940676yes
172.107.230.x/24/1840676yes
172.107.134.x/24/1740676yes
172.107.70.x/24/1640676yes
172.106.198.x/24/1540676yes
172.105.198.x/24/1463949no
172.111.198.x/24/1318978no
172.99.198.x/24/1246320no
172.123.198.x/24/112497no
172.75.198.x/24/1011426no
172.43.198.x/24/921928no
172.235.198.x/24/820940yes

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 7 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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