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Session Report

Summary:
Test run at: 2018-07-09 17:51:11 GMT
Client Prefix (v4): 187.84.95.x/24
Client AS (v4): 52850
IPv4 Probes: 99
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
Largest spoofable neighbor prefix length /9

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 (187.84.95.x/24) can spoof 8388607 neighboring addresses (within your /9 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.84.95.x/24/3152850rewritten
187.84.95.x/24/3052850natblock
187.84.95.x/24/2952850rewritten
187.84.95.x/24/2852850rewritten
187.84.95.x/24/2752850rewritten
187.84.95.x/24/2652850rewritten
187.84.95.x/24/2552850rewritten
187.84.95.x/24/2452850rewritten
187.84.94.x/24/2352850rewritten
187.84.93.x/24/2252850rewritten
187.84.91.x/24/2152850rewritten
187.84.87.x/24/2052850rewritten
187.84.79.x/24/1928161yes
187.84.127.x/24/18UNROUTEDnatblock
187.84.31.x/24/1753051yes
187.84.223.x/24/1625933yes
187.85.95.x/24/15262680yes
187.86.95.x/24/14262681yes
187.80.95.x/24/1326615yes
187.92.95.x/24/1210429yes
187.68.95.x/24/1122085yes
187.116.95.x/24/1027699yes
187.20.95.x/24/928573yes
187.212.95.x/24/8UNROUTEDnatblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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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