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Session Report

Summary:
Test run at: 2021-08-08 04:38:30 GMT
Client Prefix (v4): 103.75.49.x/24
Client AS (v4): 45650 (VIANET-NP)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
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.

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
103.75.49.x/24/3145650rewritten
103.75.49.x/24/3045650rewritten
103.75.49.x/24/2945650rewritten
103.75.49.x/24/2845650rewritten
103.75.49.x/24/2745650rewritten
103.75.49.x/24/2645650rewritten
103.75.49.x/24/2545650rewritten
103.75.49.x/24/2445650rewritten
103.75.48.x/24/23133149rewritten
103.75.51.x/24/2256253rewritten
103.75.53.x/24/2146023rewritten
103.75.57.x/24/20UNROUTEDrewritten
103.75.33.x/24/19134319rewritten
103.75.17.x/24/18134548rewritten
103.75.113.x/24/17UNROUTEDrewritten
103.75.177.x/24/1663762rewritten
103.74.49.x/24/1545062rewritten
103.73.49.x/24/1463646rewritten
103.79.49.x/24/13UNROUTEDrewritten
103.67.49.x/24/12UNROUTEDrewritten
103.91.49.x/24/11136680rewritten
103.107.49.x/24/10UNROUTEDrewritten
103.11.49.x/24/9UNROUTEDrewritten
103.203.49.x/24/845753rewritten

Meaning of status in Received column:

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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