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Session Report

Summary:
Test run at: 2018-06-12 08:52:05 GMT
Client Prefix (v4): 143.0.151.x/24
Client AS (v4): 264005
IPv4 Probes: 99
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /22
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.
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 (143.0.151.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
143.0.151.x/24/31264005yes
143.0.151.x/24/30264005yes
143.0.151.x/24/29264005yes
143.0.151.x/24/28264005yes
143.0.151.x/24/27264005yes
143.0.151.x/24/26264005yes
143.0.151.x/24/25264005yes
143.0.151.x/24/24264005yes
143.0.150.x/24/23264005yes
143.0.149.x/24/22264005yes
143.0.147.x/24/21UNROUTEDnatblock
143.0.159.x/24/20UNROUTEDnatblock
143.0.135.x/24/19UNROUTEDnatblock
143.0.183.x/24/18UNROUTEDnatblock
143.0.215.x/24/17UNROUTEDnatblock
143.0.23.x/24/16UNROUTEDnatblock
143.1.151.x/24/15UNROUTEDnatblock
143.2.151.x/24/14UNROUTEDnatblock
143.4.151.x/24/13UNROUTEDnatblock
143.8.151.x/24/12UNROUTEDnatblock
143.16.151.x/24/11UNROUTEDnatblock
143.32.151.x/24/10UNROUTEDnatblock
143.64.151.x/24/9UNROUTEDnatblock
143.128.151.x/24/8UNROUTEDnatblock

Meaning of status in Received column:

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 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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