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Session Report

Summary:
Test run at: 2021-04-25 04:41:16 GMT
Client Prefix (v4): 123.195.86.x/24
Client AS (v4): 38841 (kbro-AS-TW)
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 none

Meaning of result status in column:

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 (123.195.86.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
123.195.86.x/24/3138841natblock
123.195.86.x/24/3038841natblock
123.195.86.x/24/2938841natblock
123.195.86.x/24/2838841natblock
123.195.86.x/24/2738841natblock
123.195.86.x/24/2638841natblock
123.195.86.x/24/2538841natblock
123.195.86.x/24/2438841natblock
123.195.87.x/24/2338841natblock
123.195.84.x/24/2238841natblock
123.195.82.x/24/2138841natblock
123.195.94.x/24/2038841natblock
123.195.70.x/24/1938841natblock
123.195.118.x/24/1838841natblock
123.195.22.x/24/1738841natblock
123.195.214.x/24/1638841natblock
123.194.86.x/24/1538841natblock
123.193.86.x/24/149924natblock
123.199.86.x/24/1310066natblock
123.203.86.x/24/129269natblock
123.211.86.x/24/111221natblock
123.227.86.x/24/104713natblock
123.131.86.x/24/94837natblock
123.67.86.x/24/89394natblock

Meaning of status in Received column:

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 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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