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Session Report

Summary:
Test run at: 2023-01-25 14:50:18 GMT
Client Prefix (v4): 65.102.118.x/24
Client AS (v4): 209 (CENTURYLINK-US-LEGACY-QWEST)
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 (65.102.118.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
65.102.118.x/24/31209yes
65.102.118.x/24/30209yes
65.102.118.x/24/29209yes
65.102.118.x/24/28209yes
65.102.118.x/24/27209yes
65.102.118.x/24/26209yes
65.102.118.x/24/25209yes
65.102.118.x/24/24209yes
65.102.119.x/24/23209yes
65.102.116.x/24/22209yes
65.102.114.x/24/21209yes
65.102.126.x/24/20209yes
65.102.102.x/24/19209yes
65.102.86.x/24/18209yes
65.102.54.x/24/17209yes
65.102.246.x/24/16209yes
65.103.118.x/24/15209yes
65.100.118.x/24/14209yes
65.98.118.x/24/1325653yes
65.110.118.x/24/1220392yes
65.118.118.x/24/11209yes
65.70.118.x/24/107018yes
65.38.118.x/24/9UNROUTEDnatblock
65.230.118.x/24/8701yes

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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