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Session Report

Summary:
Test run at: 2022-08-03 19:02:11 GMT
Client Prefix (v4): 170.233.230.x/24
Client AS (v4): 265198
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 (170.233.230.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
170.233.230.x/24/31265198natblock
170.233.230.x/24/30265198natblock
170.233.230.x/24/29265198rewritten
170.233.230.x/24/28265198rewritten
170.233.230.x/24/27265198rewritten
170.233.230.x/24/26265198rewritten
170.233.230.x/24/25265198rewritten
170.233.230.x/24/24265198rewritten
170.233.231.x/24/23265198rewritten
170.233.228.x/24/22265198rewritten
170.233.226.x/24/2161588rewritten
170.233.238.x/24/20265098rewritten
170.233.246.x/24/1961920rewritten
170.233.198.x/24/18265083rewritten
170.233.166.x/24/1761942rewritten
170.233.102.x/24/16265092rewritten
170.232.230.x/24/1521833rewritten
170.235.230.x/24/1411534rewritten
170.237.230.x/24/13UNROUTEDrewritten
170.225.230.x/24/12UNROUTEDrewritten
170.249.230.x/24/11UNROUTEDrewritten
170.201.230.x/24/1010995rewritten
170.169.230.x/24/92134rewritten
170.105.230.x/24/8UNROUTEDrewritten

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 able to spoof routable, non-adjacent source addresses through the first 2 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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