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Session Report

Summary:
Test run at: 2021-10-21 07:54:15 GMT
Client Prefix (v4): 180.83.51.x/24
Client AS (v4): 17858 (POWERVIS-AS-KR)
IPv4 Probes: 66
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 (180.83.51.x/24) can spoof 127 neighboring addresses (within your /25 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
180.83.51.x/24/3117858yes
180.83.51.x/24/3017858yes
180.83.51.x/24/2917858yes
180.83.51.x/24/2817858yes
180.83.51.x/24/2717858yes
180.83.51.x/24/2617858yes
180.83.51.x/24/2517858yes
180.83.51.x/24/2417858natblock
180.83.50.x/24/2317858natblock
180.83.49.x/24/2217858natblock
180.83.55.x/24/2117858natblock
180.83.59.x/24/2017858natblock
180.83.35.x/24/1917858natblock
180.83.19.x/24/1817858natblock
180.83.115.x/24/1717858natblock
180.83.179.x/24/1617858natblock
180.82.51.x/24/159316natblock
180.81.51.x/24/149316natblock
180.87.51.x/24/136453natblock
180.91.51.x/24/12UNROUTEDnatblock
180.67.51.x/24/119318natblock
180.115.51.x/24/104134natblock
180.19.51.x/24/94713natblock
180.211.51.x/24/845361natblock

Meaning of status in Received column:

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 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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