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Session Report

Summary:
Test run at: 2021-08-25 05:10:54 GMT
Client Prefix (v4): 208.48.50.x/24
Client AS (v4): 3549 (LVLT-3549)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 (208.48.50.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
208.48.50.x/24/313549natblock
208.48.50.x/24/303549natblock
208.48.50.x/24/293549natblock
208.48.50.x/24/283549natblock
208.48.50.x/24/273549natblock
208.48.50.x/24/263549natblock
208.48.50.x/24/253549natblock
208.48.50.x/24/243549natblock
208.48.51.x/24/233356natblock
208.48.48.x/24/223549natblock
208.48.54.x/24/213549natblock
208.48.58.x/24/203549natblock
208.48.34.x/24/193549natblock
208.48.18.x/24/183549natblock
208.48.114.x/24/173561natblock
208.48.178.x/24/167385natblock
208.49.50.x/24/153549natblock
208.50.50.x/24/143549natblock
208.52.50.x/24/1311404natblock
208.56.50.x/24/12UNROUTEDnatblock
208.32.50.x/24/111239natblock
208.16.50.x/24/101239natblock
208.112.50.x/24/920021natblock
208.176.50.x/24/82828natblock

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.

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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