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Session Report

Summary:
Test run at: 2018-02-14 06:31:03 GMT
Client Prefix (v4): 185.112.249.x/24
Client AS (v4): 202939
IPv4 Probes: 102
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
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 (185.112.249.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.112.249.x/24/31202939yes
185.112.249.x/24/30202939yes
185.112.249.x/24/29202939yes
185.112.249.x/24/28202939yes
185.112.249.x/24/27202939yes
185.112.249.x/24/26202939yes
185.112.249.x/24/25202939yes
185.112.249.x/24/24202939yes
185.112.248.x/24/23202939yes
185.112.251.x/24/22202939yes
185.112.253.x/24/2115987yes
185.112.241.x/24/20UNROUTEDno
185.112.233.x/24/19204152yes
185.112.217.x/24/1825276yes
185.112.185.x/24/1759878rewritten
185.112.121.x/24/16201776yes
185.113.249.x/24/1516171yes
185.114.249.x/24/14204075yes
185.116.249.x/24/139063yes
185.120.249.x/24/1243754yes
185.96.249.x/24/11200765yes
185.80.249.x/24/1050009yes
185.48.249.x/24/961424yes
185.240.249.x/24/839384yes

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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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