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Session Report

Summary:
Test run at: 2020-04-26 19:34:23 GMT
Client Prefix (v4): 138.121.132.x/24
Client AS (v4): 264300
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /30
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.

  

  

IPv4 Adjacent Netblock Testing:

Your host (138.121.132.x/24) can spoof 3 neighboring addresses (within your /30 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.121.132.x/24/31264300yes
138.121.132.x/24/30264300yes
138.121.132.x/24/29264300no
138.121.132.x/24/28264300no
138.121.132.x/24/27264300no
138.121.132.x/24/26264300no
138.121.132.x/24/25264300no
138.121.132.x/24/24264300no
138.121.133.x/24/23264300no
138.121.134.x/24/22264300no
138.121.128.x/24/21264294no
138.121.140.x/24/2028317no
138.121.148.x/24/19264298no
138.121.164.x/24/18UNROUTEDno
138.121.196.x/24/17264301no
138.121.4.x/24/1661499no
138.120.132.x/24/158983no
138.123.132.x/24/1446887no
138.125.132.x/24/13UNROUTEDno
138.113.132.x/24/12UNROUTEDno
138.105.132.x/24/11UNROUTEDno
138.89.132.x/24/10701no
138.57.132.x/24/9UNROUTEDno
138.249.132.x/24/8UNROUTEDno

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 (but that netblock is within the source AS)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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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