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Session Report

Summary:
Test run at: 2021-10-07 14:03:15 GMT
Client Prefix (v4): 137.97.76.x/24
Client AS (v4): 55836 (RELIANCEJIO-IN)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /8
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 (137.97.76.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
137.97.76.x/24/3155836yes
137.97.76.x/24/3055836yes
137.97.76.x/24/2955836yes
137.97.76.x/24/2855836yes
137.97.76.x/24/2755836yes
137.97.76.x/24/2655836yes
137.97.76.x/24/2555836natblock
137.97.76.x/24/2455836yes
137.97.77.x/24/2355836yes
137.97.78.x/24/2255836yes
137.97.72.x/24/2155836yes
137.97.68.x/24/2055836yes
137.97.92.x/24/1955836yes
137.97.108.x/24/1855836yes
137.97.12.x/24/1755836yes
137.97.204.x/24/1655836yes
137.96.76.x/24/151234yes
137.99.76.x/24/1413796yes
137.101.76.x/24/1312430yes
137.105.76.x/24/12UNROUTEDnatblock
137.113.76.x/24/1119464yes
137.65.76.x/24/103680yes
137.33.76.x/24/9UNROUTEDnatblock
137.225.76.x/24/8749yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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.

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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