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Session Report

Summary:
Test run at: 2019-03-01 03:17:10 GMT
Client Prefix (v4): 162.245.21.x/24
Client AS (v4): 32329 (MONKEYBRAINS)
IPv4 Probes: 116
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 (162.245.21.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
162.245.21.x/24/3132329rewritten
162.245.21.x/24/3032329sendto
162.245.21.x/24/2932329sendto
162.245.21.x/24/2832329sendto
162.245.21.x/24/2732329sendto
162.245.21.x/24/2632329sendto
162.245.21.x/24/2532329rewritten
162.245.21.x/24/2432329sendto
162.245.20.x/24/2332329sendto
162.245.23.x/24/2232329sendto
162.245.17.x/24/2123314rewritten
162.245.29.x/24/2053817sendto
162.245.5.x/24/1953667sendto
162.245.53.x/24/1831899sendto
162.245.85.x/24/1719084sendto
162.245.149.x/24/1626399sendto
162.244.21.x/24/15396282sendto
162.247.21.x/24/1415321sendto
162.241.21.x/24/1346606sendto
162.253.21.x/24/12396420rewritten
162.229.21.x/24/117018sendto
162.213.21.x/24/1026794sendto
162.181.21.x/24/921928sendto
162.117.21.x/24/8UNROUTEDsendto

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.
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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