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Session Report

Summary:
Test run at: 2019-12-12 17:28:15 GMT
Client Prefix (v4): 136.145.33.x/24
Client AS (v4): 5786 (UPRENET)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
Largest spoofable neighbor prefix length /16
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 (136.145.33.x/24) can spoof 65535 neighboring addresses (within your /16 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
136.145.33.x/24/315786yes
136.145.33.x/24/305786yes
136.145.33.x/24/295786yes
136.145.33.x/24/285786yes
136.145.33.x/24/275786yes
136.145.33.x/24/265786yes
136.145.33.x/24/255786yes
136.145.33.x/24/245786yes
136.145.32.x/24/235786yes
136.145.35.x/24/225786yes
136.145.37.x/24/215786yes
136.145.41.x/24/205786sendto
136.145.49.x/24/195786sendto
136.145.1.x/24/185786sendto
136.145.97.x/24/175786sendto
136.145.161.x/24/165786yes
136.144.33.x/24/15UNROUTEDsendto
136.147.33.x/24/1414340sendto
136.149.33.x/24/13385sendto
136.153.33.x/24/12132909sendto
136.129.33.x/24/11UNROUTEDsendto
136.177.33.x/24/1022284sendto
136.209.33.x/24/91556sendto
136.17.33.x/24/8UNROUTEDsendto

Meaning of status in Received column:

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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