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Session Report

Summary:
Test run at: 2019-11-21 19:20:21 GMT
Client Prefix (v4): 177.10.120.x/24
Client AS (v4): 53236
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none
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 (177.10.120.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.10.120.x/24/3153236rewritten
177.10.120.x/24/3053236rewritten
177.10.120.x/24/2953236rewritten
177.10.120.x/24/2853236rewritten
177.10.120.x/24/2753236rewritten
177.10.120.x/24/2653236rewritten
177.10.120.x/24/2553236rewritten
177.10.120.x/24/2453236rewritten
177.10.121.x/24/2353236rewritten
177.10.122.x/24/2253236rewritten
177.10.124.x/24/2152918rewritten
177.10.112.x/24/2053235rewritten
177.10.104.x/24/19262848rewritten
177.10.88.x/24/18263014rewritten
177.10.56.x/24/17262847rewritten
177.10.248.x/24/16262274rewritten
177.11.120.x/24/15262296rewritten
177.8.120.x/24/14263028rewritten
177.14.120.x/24/13UNROUTEDrewritten
177.2.120.x/24/128167rewritten
177.26.120.x/24/1126599rewritten
177.42.120.x/24/1018881rewritten
177.74.120.x/24/953184rewritten
177.138.120.x/24/827699rewritten

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 1 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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