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Session Report

Summary:
Test run at: 2018-01-13 00:03:34 GMT
Client Prefix (v4): 137.164.81.x/24
Client AS (v4): 2152 (CSUNET-NW)
IPv4 Probes: 102
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 received
Routable received
Largest spoofable neighbor prefix length /8

Meaning of result status in column:

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 (137.164.81.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
137.164.81.x/24/312152yes
137.164.81.x/24/302152yes
137.164.81.x/24/292152yes
137.164.81.x/24/282152yes
137.164.81.x/24/272152yes
137.164.81.x/24/262152yes
137.164.81.x/24/252152yes
137.164.81.x/24/242152yes
137.164.80.x/24/232152yes
137.164.83.x/24/222152natblock
137.164.85.x/24/212152yes
137.164.89.x/24/202152yes
137.164.65.x/24/192152yes
137.164.113.x/24/182152yes
137.164.17.x/24/172153yes
137.164.209.x/24/162152yes
137.165.81.x/24/1511399yes
137.166.81.x/24/1458877yes
137.160.81.x/24/133549yes
137.172.81.x/24/12UNROUTEDyes
137.180.81.x/24/1111003yes
137.132.81.x/24/107472yes
137.228.81.x/24/9127yes
137.36.81.x/24/811351yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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 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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