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Session Report

Summary:
Test run at: 2018-06-18 14:04:01 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 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 (143.0.151.x/24) can spoof 16777215 neighboring addresses (within your /8 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/24/26264005sendto
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/24/21264020yes
143.0.159.x/24/20264012sendto
143.0.135.x/24/19264021natblock
143.0.183.x/24/18264007natblock
143.0.215.x/24/17262746sendto
143.0.23.x/24/16263985sendto
143.1.151.x/24/1511003yes
143.2.151.x/24/1411003natblock
143.4.151.x/24/1311003natblock
143.8.151.x/24/123561natblock
143.16.151.x/24/1111003sendto
143.32.151.x/24/1011003natblock
143.64.151.x/24/9UNROUTEDnatblock
143.128.151.x/24/82018yes

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.
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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