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Session Report

Summary:
Test run at: 2022-09-07 03:35:58 GMT
Client Prefix (v4): 49.166.139.x/24
Client AS (v4): 17858 (POWERVIS-AS-KR)
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 /26
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 (49.166.139.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
49.166.139.x/24/3117858yes
49.166.139.x/24/3017858yes
49.166.139.x/24/2917858yes
49.166.139.x/24/2817858yes
49.166.139.x/24/2717858yes
49.166.139.x/24/2617858yes
49.166.139.x/24/2517858no
49.166.139.x/24/2417858no
49.166.138.x/24/2317858no
49.166.137.x/24/2217858no
49.166.143.x/24/2117858no
49.166.131.x/24/2017858no
49.166.155.x/24/1917858no
49.166.171.x/24/1817858no
49.166.203.x/24/1717858no
49.166.11.x/24/1617858no
49.167.139.x/24/1517858no
49.164.139.x/24/1417858no
49.162.139.x/24/1317858no
49.174.139.x/24/1217858no
49.182.139.x/24/114804no
49.134.139.x/24/102516no
49.230.139.x/24/9131445no
49.38.139.x/24/855836no

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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