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Session Report

Summary:
Test run at: 2019-03-06 15:30:34 GMT
Client Prefix (v4): 209.48.7.x/24
Client AS (v4): 2828 (XO-AS15)
IPv4 Probes: 116
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 (209.48.7.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
209.48.7.x/24/312828natblock
209.48.7.x/24/302828natblock
209.48.7.x/24/292828natblock
209.48.7.x/24/282828natblock
209.48.7.x/24/272828natblock
209.48.7.x/24/262828natblock
209.48.7.x/24/252828natblock
209.48.7.x/24/242828natblock
209.48.6.x/24/232828natblock
209.48.5.x/24/222828rewritten
209.48.3.x/24/212828natblock
209.48.15.x/24/202828natblock
209.48.23.x/24/1919095natblock
209.48.39.x/24/1826114natblock
209.48.71.x/24/172828natblock
209.48.135.x/24/162828natblock
209.49.7.x/24/152828natblock
209.50.7.x/24/1415108natblock
209.52.7.x/24/13852natblock
209.56.7.x/24/126122natblock
209.32.7.x/24/115006natblock
209.16.7.x/24/1010713natblock
209.112.7.x/24/915290natblock
209.176.7.x/24/83561natblock

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.
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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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