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Session Report

Summary:
Test run at: 2023-08-17 06:03:26 GMT
Client Prefix (v4): 118.125.191.x/24
Client AS (v4): 4134 (CHINANET-BACKBONE)
IPv4 Probes: 63
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none
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.

Warnings:

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
118.125.191.x/24/314134natblock
118.125.191.x/24/304134natblock
118.125.191.x/24/294134natblock
118.125.191.x/24/284134natblock
118.125.191.x/24/274134natblock
118.125.191.x/24/264134natblock
118.125.191.x/24/254134natblock
118.125.191.x/24/244134natblock
118.125.190.x/24/234134natblock
118.125.189.x/24/224134natblock
118.125.187.x/24/214134natblock
118.125.183.x/24/204134rewritten
118.125.175.x/24/194134natblock
118.125.159.x/24/184134natblock
118.125.255.x/24/174134rewritten
118.125.63.x/24/164134natblock
118.124.191.x/24/154134natblock
118.127.191.x/24/1438829natblock
118.121.191.x/24/134134natblock
118.117.191.x/24/124134natblock
118.109.191.x/24/112518rewritten
118.93.191.x/24/109500natblock
118.61.191.x/24/94766natblock
118.253.191.x/24/863835natblock

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.
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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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