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Session Report

Summary:
Test run at: 2017-04-12 09:47:56 GMT
Client Prefix (v4): 79.98.72.x/24
Client AS (v4): 44002 (SYS-DATACOM)
IPv4 Probes: 90
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable blocked
Largest spoofable neighbor prefix length /21
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 (79.98.72.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
79.98.72.x/24/3144002yes
79.98.72.x/24/3044002yes
79.98.72.x/24/2944002yes
79.98.72.x/24/2844002yes
79.98.72.x/24/2744002natblock
79.98.72.x/24/2644002yes
79.98.72.x/24/2544002yes
79.98.72.x/24/2444002yes
79.98.73.x/24/2344002yes
79.98.74.x/24/2244002yes
79.98.76.x/24/2144002yes
79.98.64.x/24/20198153natblock
79.98.88.x/24/1912714natblock
79.98.104.x/24/18197216natblock
79.98.8.x/24/1744020natblock
79.98.200.x/24/1642408natblock
79.99.72.x/24/1531270natblock
79.96.72.x/24/1412824natblock
79.102.72.x/24/132119natblock
79.106.72.x/24/1242313natblock
79.114.72.x/24/118708natblock
79.66.72.x/24/109105natblock
79.34.72.x/24/93269natblock
79.226.72.x/24/83320natblock

Meaning of status in Received column:

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 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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