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Session Report

Summary:
Test run at: 2024-06-03 12:48:04 GMT
Client Prefix (v4): 177.152.73.x/24
Client AS (v4): 262773
IPv4 Probes: 69
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 (177.152.73.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.152.73.x/24/31262773natblock
177.152.73.x/24/30262773natblock
177.152.73.x/24/29262773natblock
177.152.73.x/24/28262773natblock
177.152.73.x/24/27262773natblock
177.152.73.x/24/26262773natblock
177.152.73.x/24/25262773natblock
177.152.73.x/24/24262773natblock
177.152.72.x/24/23262773natblock
177.152.75.x/24/22262773natblock
177.152.77.x/24/21262773natblock
177.152.65.x/24/20262773natblock
177.152.89.x/24/1952535natblock
177.152.105.x/24/18270587natblock
177.152.9.x/24/17262399natblock
177.152.201.x/24/16263034natblock
177.153.73.x/24/1527715natblock
177.154.73.x/24/1428349rewritten
177.156.73.x/24/1318881natblock
177.144.73.x/24/1226599natblock
177.136.73.x/24/11263606natblock
177.184.73.x/24/1052898natblock
177.216.73.x/24/926615natblock
177.24.73.x/24/826599natblock

Meaning of status in Received column:

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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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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