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Session Report

Summary:
Test run at: 2017-09-16 11:26:51 GMT
Client Prefix (v4): 123.243.57.x/24
Client AS (v4): 7545 (TPG-INTERNET-AP)
IPv4 Probes: 116
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 received
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 (123.243.57.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
123.243.57.x/24/317545yes
123.243.57.x/24/307545yes
123.243.57.x/24/297545yes
123.243.57.x/24/287545yes
123.243.57.x/24/277545yes
123.243.57.x/24/267545yes
123.243.57.x/24/257545yes
123.243.57.x/24/247545yes
123.243.56.x/24/237545yes
123.243.59.x/24/227545yes
123.243.61.x/24/217545yes
123.243.49.x/24/207545yes
123.243.41.x/24/197545yes
123.243.25.x/24/187545yes
123.243.121.x/24/177545yes
123.243.185.x/24/167545yes
123.242.57.x/24/15UNROUTEDnatblock
123.241.57.x/24/14131596yes
123.247.57.x/24/134134yes
123.251.57.x/24/12UNROUTEDyes
123.227.57.x/24/114713yes
123.211.57.x/24/101221yes
123.179.57.x/24/94134yes
123.115.57.x/24/84808yes

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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