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Session Report

Summary:
Test run at: 2022-09-23 15:59:38 GMT
Client Prefix (v4): 201.182.176.x/24
Client AS (v4): 267528
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /8
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 (201.182.176.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
201.182.176.x/24/31267528yes
201.182.176.x/24/30267528yes
201.182.176.x/24/29267528yes
201.182.176.x/24/28267528yes
201.182.176.x/24/27267528yes
201.182.176.x/24/26267528yes
201.182.176.x/24/25267528yes
201.182.176.x/24/24267528yes
201.182.177.x/24/23267528yes
201.182.178.x/24/22267528yes
201.182.180.x/24/21267529yes
201.182.184.x/24/20267548yes
201.182.160.x/24/19UNROUTEDnatblock
201.182.144.x/24/18267539yes
201.182.240.x/24/17270009yes
201.182.48.x/24/16267521yes
201.183.176.x/24/15UNROUTEDnatblock
201.180.176.x/24/1422927yes
201.178.176.x/24/1322927yes
201.190.176.x/24/1228075yes
201.166.176.x/24/117438yes
201.150.176.x/24/1027839yes
201.246.176.x/24/97418yes
201.54.176.x/24/8271055yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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 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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