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Session Report

Summary:
Test run at: 2021-05-05 21:10:30 GMT
Client Prefix (v4): 128.116.171.x/24
Client AS (v4): 35612 (NGI-AS)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable received
Largest spoofable neighbor prefix length /8
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 (128.116.171.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
128.116.171.x/24/3135612sendto
128.116.171.x/24/3035612sendto
128.116.171.x/24/2935612yes
128.116.171.x/24/2835612yes
128.116.171.x/24/2735612yes
128.116.171.x/24/2635612yes
128.116.171.x/24/2535612yes
128.116.171.x/24/2435612yes
128.116.170.x/24/2335612yes
128.116.169.x/24/2235612yes
128.116.175.x/24/2135612yes
128.116.163.x/24/2035612yes
128.116.187.x/24/1935612yes
128.116.139.x/24/1835612yes
128.116.235.x/24/1735612yes
128.116.43.x/24/1622697yes
128.117.171.x/24/15194yes
128.118.171.x/24/143999yes
128.112.171.x/24/1388yes
128.124.171.x/24/1221497yes
128.100.171.x/24/11239yes
128.84.171.x/24/1026yes
128.52.171.x/24/93yes
128.244.171.x/24/877yes

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)
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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