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Session Report

Summary:
Test run at: 2020-03-15 05:27:55 GMT
Client Prefix (v4): 103.239.253.x/24
Client AS (v4): 63526 (SSDTL-BD)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
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 (103.239.253.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
103.239.253.x/24/3163526rewritten
103.239.253.x/24/3063526rewritten
103.239.253.x/24/2963526rewritten
103.239.253.x/24/2863526rewritten
103.239.253.x/24/2763526rewritten
103.239.253.x/24/2663526rewritten
103.239.253.x/24/2563526rewritten
103.239.253.x/24/2463526rewritten
103.239.252.x/24/2363526rewritten
103.239.255.x/24/2263526rewritten
103.239.249.x/24/21UNROUTEDrewritten
103.239.245.x/24/204837rewritten
103.239.237.x/24/19UNROUTEDrewritten
103.239.221.x/24/1864010rewritten
103.239.189.x/24/1723693rewritten
103.239.125.x/24/16133262rewritten
103.238.253.x/24/1524137rewritten
103.237.253.x/24/144808rewritten
103.235.253.x/24/1323724rewritten
103.231.253.x/24/12133380rewritten
103.255.253.x/24/11UNROUTEDrewritten
103.207.253.x/24/10UNROUTEDrewritten
103.175.253.x/24/9UNROUTEDrewritten
103.111.253.x/24/8UNROUTEDrewritten

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 able to spoof routable, non-adjacent source addresses through the first 10 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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