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Session Report

Summary:
Test run at: 2017-04-24 01:12:10 GMT
Client Prefix (v4): 203.119.42.x/24
Client AS (v4): 4608 (APNIC-SERVICES)
IPv4 Probes: 90
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /24
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 (203.119.42.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
203.119.42.x/24/314608yes
203.119.42.x/24/304608yes
203.119.42.x/24/294608yes
203.119.42.x/24/284608yes
203.119.42.x/24/274608yes
203.119.42.x/24/264608yes
203.119.42.x/24/254608yes
203.119.42.x/24/244608yes
203.119.43.x/24/23UNROUTEDno
203.119.40.x/24/2224252no
203.119.46.x/24/2124089no
203.119.34.x/24/20UNROUTEDno
203.119.58.x/24/19UNROUTEDno
203.119.10.x/24/1823902no
203.119.106.x/24/174608no
203.119.170.x/24/16UNROUTEDno
203.118.42.x/24/154657no
203.117.42.x/24/144657no
203.115.42.x/24/1317904no
203.127.42.x/24/123758no
203.103.42.x/24/11703no
203.87.42.x/24/107545no
203.55.42.x/24/94739no
203.247.42.x/24/89775no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 1 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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