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Session Report

Summary:
Test run at: 2019-08-25 17:40:12 GMT
Client Prefix (v4): 103.125.28.x/24
Client AS (v4): 138418 (CLC-AS-AP)
IPv4 Probes: 96
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
Largest spoofable neighbor prefix length /22

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 (103.125.28.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
103.125.28.x/24/31138418yes
103.125.28.x/24/30138418yes
103.125.28.x/24/29138418natblock
103.125.28.x/24/28138418yes
103.125.28.x/24/27138418yes
103.125.28.x/24/26138418yes
103.125.28.x/24/25138418yes
103.125.28.x/24/24138418yes
103.125.29.x/24/23138418yes
103.125.30.x/24/22138418yes
103.125.24.x/24/21UNROUTEDrewritten
103.125.20.x/24/20UNROUTEDrewritten
103.125.12.x/24/198100rewritten
103.125.60.x/24/189541rewritten
103.125.92.x/24/174618rewritten
103.125.156.x/24/16UNROUTEDrewritten
103.124.28.x/24/15UNROUTEDrewritten
103.127.28.x/24/14134926rewritten
103.121.28.x/24/13134596rewritten
103.117.28.x/24/12137916rewritten
103.109.28.x/24/11135936rewritten
103.93.28.x/24/10UNROUTEDrewritten
103.61.28.x/24/9UNROUTEDrewritten
103.253.28.x/24/855303rewritten

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.
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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