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Session Report

Summary:
Test run at: 2021-11-05 19:34:04 GMT
Client Prefix (v4): 170.82.176.x/24
Client AS (v4): 28343
IPv4 Probes: 66
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 (170.82.176.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
170.82.176.x/24/3128343rewritten
170.82.176.x/24/3028343rewritten
170.82.176.x/24/2928343rewritten
170.82.176.x/24/2828343rewritten
170.82.176.x/24/2728343rewritten
170.82.176.x/24/2628343natblock
170.82.176.x/24/2528343rewritten
170.82.176.x/24/2428343rewritten
170.82.177.x/24/2328343rewritten
170.82.178.x/24/2228343rewritten
170.82.180.x/24/21266445rewritten
170.82.184.x/24/2061741rewritten
170.82.160.x/24/1953152rewritten
170.82.144.x/24/18263717natblock
170.82.240.x/24/1728343rewritten
170.82.48.x/24/16266438rewritten
170.83.176.x/24/15264850rewritten
170.80.176.x/24/14262293rewritten
170.86.176.x/24/137726rewritten
170.90.176.x/24/1264208rewritten
170.66.176.x/24/1111993natblock
170.114.176.x/24/10UNROUTEDrewritten
170.18.176.x/24/916780rewritten
170.210.176.x/24/84270rewritten

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 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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