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Session Report

Summary:
Test run at: 2017-01-24 19:47:16 GMT
Client Prefix (v4): 140.112.218.x/24
Client AS (v4): 17716 (NTU-TW)
IPv4 Probes: 90
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
Largest spoofable neighbor prefix length none
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 (140.112.218.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
140.112.218.x/24/3117716sendto
140.112.218.x/24/3017716sendto
140.112.218.x/24/2917716sendto
140.112.218.x/24/2817716sendto
140.112.218.x/24/2717716sendto
140.112.218.x/24/2617716sendto
140.112.218.x/24/2517716sendto
140.112.218.x/24/2417716sendto
140.112.219.x/24/2317716sendto
140.112.216.x/24/2217716sendto
140.112.222.x/24/2117716sendto
140.112.210.x/24/2017716sendto
140.112.202.x/24/1917716sendto
140.112.250.x/24/1817716sendto
140.112.154.x/24/1717716sendto
140.112.90.x/24/1617716sendto
140.113.218.x/24/159916sendto
140.114.218.x/24/1418047sendto
140.116.218.x/24/131659sendto
140.120.218.x/24/121659sendto
140.96.218.x/24/1118422sendto
140.80.218.x/24/1027293sendto
140.48.218.x/24/9UNROUTEDsendto
140.240.218.x/24/84134sendto

Meaning of status in Received column:

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 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.
Last Modified