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Session Report

Summary:
Test run at: 2017-07-23 11:29:18 GMT
Client Prefix (v4): 77.99.239.x/24
Client AS (v4): 5089 (NTL)
IPv4 Probes: 117
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
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 (77.99.239.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
77.99.239.x/24/315089natblock
77.99.239.x/24/305089natblock
77.99.239.x/24/295089natblock
77.99.239.x/24/285089natblock
77.99.239.x/24/275089natblock
77.99.239.x/24/265089natblock
77.99.239.x/24/255089natblock
77.99.239.x/24/245089natblock
77.99.238.x/24/235089natblock
77.99.237.x/24/225089natblock
77.99.235.x/24/215089natblock
77.99.231.x/24/205089natblock
77.99.255.x/24/195089natblock
77.99.207.x/24/185089natblock
77.99.175.x/24/175089natblock
77.99.111.x/24/165089natblock
77.98.239.x/24/155089natblock
77.97.239.x/24/145089natblock
77.103.239.x/24/135089natblock
77.107.239.x/24/1216171natblock
77.115.239.x/24/118374natblock
77.67.239.x/24/10UNROUTEDnatblock
77.35.239.x/24/912389natblock
77.227.239.x/24/812430natblock

Meaning of status in Received column:

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 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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