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Session Report

Summary:
Test run at: 2022-06-13 16:51:47 GMT
Client Prefix (v4): 209.203.101.x/24
Client AS (v4): 3549 (LVLT-3549)
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 (209.203.101.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
209.203.101.x/24/313549rewritten
209.203.101.x/24/303549rewritten
209.203.101.x/24/293549rewritten
209.203.101.x/24/283549rewritten
209.203.101.x/24/273549rewritten
209.203.101.x/24/263549rewritten
209.203.101.x/24/253549rewritten
209.203.101.x/24/243549rewritten
209.203.100.x/24/2311881rewritten
209.203.103.x/24/223549rewritten
209.203.97.x/24/213549rewritten
209.203.109.x/24/2032289rewritten
209.203.117.x/24/193549rewritten
209.203.69.x/24/1825649rewritten
209.203.37.x/24/1711845rewritten
209.203.229.x/24/16UNROUTEDrewritten
209.202.101.x/24/15852rewritten
209.201.101.x/24/14209rewritten
209.207.101.x/24/1315247rewritten
209.195.101.x/24/1211814rewritten
209.219.101.x/24/117029rewritten
209.235.101.x/24/107381rewritten
209.139.101.x/24/92914rewritten
209.75.101.x/24/82914rewritten

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.

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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