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Session Report

Summary:
Test run at: 2022-09-30 22:07:22 GMT
Client Prefix (v4): 197.54.219.x/24
Client AS (v4): 8452 (TE-AS)
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 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 (197.54.219.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
197.54.219.x/24/318452rewritten
197.54.219.x/24/308452rewritten
197.54.219.x/24/298452rewritten
197.54.219.x/24/288452rewritten
197.54.219.x/24/278452rewritten
197.54.219.x/24/268452rewritten
197.54.219.x/24/258452rewritten
197.54.219.x/24/248452rewritten
197.54.218.x/24/238452rewritten
197.54.217.x/24/228452rewritten
197.54.223.x/24/218452rewritten
197.54.211.x/24/208452rewritten
197.54.203.x/24/198452rewritten
197.54.251.x/24/188452rewritten
197.54.155.x/24/178452rewritten
197.54.91.x/24/168452rewritten
197.55.219.x/24/158452rewritten
197.52.219.x/24/148452rewritten
197.50.219.x/24/138452rewritten
197.62.219.x/24/128452rewritten
197.38.219.x/24/118452rewritten
197.22.219.x/24/1037693rewritten
197.118.219.x/24/936947rewritten
197.182.219.x/24/833771rewritten

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 able to spoof routable, non-adjacent source addresses through the first 10 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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