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Session Report

Summary:
Test run at: 2023-02-20 17:10:18 GMT
Client Prefix (v4): 45.138.19.x/24
Client AS (v4): 51736 (Brit-Group-Services-Limited)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /25
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 (45.138.19.x/24) can spoof 127 neighboring addresses (within your /25 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.138.19.x/24/3151736yes
45.138.19.x/24/3051736yes
45.138.19.x/24/2951736yes
45.138.19.x/24/2851736yes
45.138.19.x/24/2751736yes
45.138.19.x/24/2651736yes
45.138.19.x/24/2551736yes
45.138.19.x/24/2451736no
45.138.18.x/24/2360798no
45.138.17.x/24/2216509no
45.138.23.x/24/21208419no
45.138.27.x/24/20208951no
45.138.3.x/24/1939521no
45.138.51.x/24/18213250no
45.138.83.x/24/176134no
45.138.147.x/24/1649505no
45.139.19.x/24/1562366no
45.136.19.x/24/1461317no
45.142.19.x/24/13206238no
45.130.19.x/24/12201942no
45.154.19.x/24/1116509no
45.170.19.x/24/10268145no
45.202.19.x/24/9135607no
45.10.19.x/24/839521no

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 able to spoof routable, non-adjacent source addresses through the first 1 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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