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Session Report

Summary:
Test run at: 2021-11-20 18:10:45 GMT
Client Prefix (v4): 205.170.182.x/24
Client AS (v4): 209 (CENTURYLINK-US-LEGACY-QWEST)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length none

Meaning of result status in column:

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.
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 (205.170.182.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
205.170.182.x/24/31209natblock
205.170.182.x/24/30209natblock
205.170.182.x/24/29209natblock
205.170.182.x/24/28209natblock
205.170.182.x/24/27209natblock
205.170.182.x/24/26209natblock
205.170.182.x/24/25209natblock
205.170.182.x/24/24209natblock
205.170.183.x/24/23209natblock
205.170.180.x/24/22209natblock
205.170.178.x/24/21209natblock
205.170.190.x/24/2022561natblock
205.170.166.x/24/19209natblock
205.170.150.x/24/18209natblock
205.170.246.x/24/17209natblock
205.170.54.x/24/16209natblock
205.171.182.x/24/15209natblock
205.168.182.x/24/1432932natblock
205.174.182.x/24/1325934natblock
205.162.182.x/24/121239natblock
205.186.182.x/24/1131815natblock
205.138.182.x/24/103561natblock
205.234.182.x/24/923352natblock
205.42.182.x/24/8749natblock

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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