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Session Report

Summary:
Test run at: 2021-07-24 16:25:02 GMT
Client Prefix (v4): 177.86.156.x/24
Client AS (v4): 263324
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable blocked
Largest spoofable neighbor prefix length /29
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 (177.86.156.x/24) can spoof 7 neighboring addresses (within your /29 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.86.156.x/24/31263324yes
177.86.156.x/24/30263324yes
177.86.156.x/24/29263324yes
177.86.156.x/24/28263324natblock
177.86.156.x/24/27263324natblock
177.86.156.x/24/26263324natblock
177.86.156.x/24/25263324natblock
177.86.156.x/24/24263324natblock
177.86.157.x/24/23263324natblock
177.86.158.x/24/22263324natblock
177.86.152.x/24/2152572natblock
177.86.148.x/24/20262851natblock
177.86.140.x/24/1952582natblock
177.86.188.x/24/1852575natblock
177.86.220.x/24/1752577natblock
177.86.28.x/24/16262492natblock
177.87.156.x/24/15263387natblock
177.84.156.x/24/14263551natblock
177.82.156.x/24/1328573natblock
177.94.156.x/24/1227699natblock
177.70.156.x/24/11262813natblock
177.118.156.x/24/1027699natblock
177.22.156.x/24/952958natblock
177.214.156.x/24/826599natblock

Meaning of status in Received column:

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 2 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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