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Session Report

Summary:
Test run at: 2017-03-19 05:51:44 GMT
Client Prefix (v4): 89.248.172.x/24
Client AS (v4): 29073
IPv4 Probes: 90
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /20
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 (89.248.172.x/24) can spoof 4095 neighboring addresses (within your /20 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
89.248.172.x/24/3129073yes
89.248.172.x/24/3029073yes
89.248.172.x/24/2929073yes
89.248.172.x/24/2829073yes
89.248.172.x/24/2729073yes
89.248.172.x/24/2629073yes
89.248.172.x/24/2529073yes
89.248.172.x/24/2429073yes
89.248.173.x/24/2329073yes
89.248.174.x/24/2229073yes
89.248.168.x/24/2129073yes
89.248.164.x/24/2029073yes
89.248.188.x/24/1934687no
89.248.140.x/24/1842517no
89.248.236.x/24/1734221no
89.248.44.x/24/1642346no
89.249.172.x/24/152848no
89.250.172.x/24/14UNROUTEDno
89.252.172.x/24/13UNROUTEDno
89.240.172.x/24/1213285no
89.232.172.x/24/11UNROUTEDno
89.216.172.x/24/1031042no
89.184.172.x/24/939647no
89.120.172.x/24/89050no

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 10 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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