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Session Report

Summary:
Test run at: 2019-09-18 18:58:01 GMT
Client Prefix (v4): 187.85.152.x/24
Client AS (v4): 53062
IPv4 Probes: 72
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 (187.85.152.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.85.152.x/24/3153062yes
187.85.152.x/24/3053062natblock
187.85.152.x/24/2953062yes
187.85.152.x/24/2853062yes
187.85.152.x/24/2753062yes
187.85.152.x/24/2653062yes
187.85.152.x/24/2553062yes
187.85.152.x/24/2453062yes
187.85.153.x/24/2353062yes
187.85.154.x/24/2253062yes
187.85.156.x/24/2153062yes
187.85.144.x/24/2053062yes
187.85.136.x/24/1953061yes
187.85.184.x/24/1828343yes
187.85.216.x/24/17267484yes
187.85.24.x/24/16262659yes
187.84.152.x/24/1553071yes
187.87.152.x/24/14262686yes
187.81.152.x/24/1326615yes
187.93.152.x/24/1210429yes
187.69.152.x/24/1122085yes
187.117.152.x/24/1026599yes
187.21.152.x/24/928573yes
187.213.152.x/24/88151yes

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 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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