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Session Report

Summary:
Test run at: 2018-09-17 21:33:05 GMT
Client Prefix (v4): 128.91.165.x/24
Client AS (v4): 55 (UPENN)
IPv4 Probes: 124
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /19
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 (128.91.165.x/24) can spoof 8191 neighboring addresses (within your /19 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
128.91.165.x/24/3155sendto
128.91.165.x/24/3055sendto
128.91.165.x/24/2955sendto
128.91.165.x/24/2855yes
128.91.165.x/24/2755sendto
128.91.165.x/24/2655sendto
128.91.165.x/24/2555sendto
128.91.165.x/24/2455sendto
128.91.164.x/24/2355yes
128.91.167.x/24/2255sendto
128.91.161.x/24/2155sendto
128.91.173.x/24/2055sendto
128.91.181.x/24/1955yes
128.91.133.x/24/1855sendto
128.91.229.x/24/1755sendto
128.91.37.x/24/1655sendto
128.90.165.x/24/1522363sendto
128.89.165.x/24/1411488sendto
128.95.165.x/24/1373no
128.83.165.x/24/1218no
128.75.165.x/24/118402sendto
128.123.165.x/24/1040246sendto
128.27.165.x/24/917511sendto
128.219.165.x/24/850sendto

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)
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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