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Session Report

Summary:
Test run at: 2022-06-18 22:22:51 GMT
Client Prefix (v4): 179.127.72.x/24
Client AS (v4): 263283
IPv4 Probes: 60
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 (179.127.72.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
179.127.72.x/24/31263283sendto
179.127.72.x/24/30263283sendto
179.127.72.x/24/29263283sendto
179.127.72.x/24/28263283sendto
179.127.72.x/24/27263283sendto
179.127.72.x/24/26263283sendto
179.127.72.x/24/25263283sendto
179.127.72.x/24/24263283sendto
179.127.73.x/24/23263283sendto
179.127.74.x/24/22263283sendto
179.127.76.x/24/21263283sendto
179.127.64.x/24/2028287sendto
179.127.88.x/24/1928292sendto
179.127.104.x/24/18262469sendto
179.127.8.x/24/1728209sendto
179.127.200.x/24/16263642sendto
179.126.72.x/24/1553006sendto
179.125.72.x/24/14262988sendto
179.123.72.x/24/1326615sendto
179.119.72.x/24/1210429rewritten
179.111.72.x/24/1127699sendto
179.95.72.x/24/1018881sendto
179.63.72.x/24/9UNROUTEDsendto
179.255.72.x/24/88167sendto

Meaning of status in Received column:

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.
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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