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Session Report

Summary:
Test run at: 2022-06-13 10:22:16 GMT
Client Prefix (v4): 177.55.50.x/24
Client AS (v4): 262493
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
Largest spoofable neighbor prefix length /22
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 (177.55.50.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.55.50.x/24/31262493sendto
177.55.50.x/24/30262493sendto
177.55.50.x/24/29262493sendto
177.55.50.x/24/28262493sendto
177.55.50.x/24/27262493sendto
177.55.50.x/24/26262493sendto
177.55.50.x/24/25262493sendto
177.55.50.x/24/24262493sendto
177.55.51.x/24/23262493sendto
177.55.48.x/24/22262493yes
177.55.54.x/24/21262493sendto
177.55.58.x/24/20262493sendto
177.55.34.x/24/19262482sendto
177.55.18.x/24/1811338sendto
177.55.114.x/24/1753057sendto
177.55.178.x/24/16262514sendto
177.54.50.x/24/1528292sendto
177.53.50.x/24/14262458sendto
177.51.50.x/24/1326615sendto
177.63.50.x/24/1210429sendto
177.39.50.x/24/11262318sendto
177.23.50.x/24/10UNROUTEDsendto
177.119.50.x/24/926599sendto
177.183.50.x/24/828573sendto

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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