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Session Report

Summary:
Test run at: 2021-02-22 14:22:16 GMT
Client Prefix (v4): 161.77.1.x/24
Client AS (v4): 7849 (CROCKERCOM)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
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.
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 (161.77.1.x/24) can spoof 65535 neighboring addresses (within your /16 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
161.77.1.x/24/317849yes
161.77.1.x/24/307849yes
161.77.1.x/24/297849yes
161.77.1.x/24/287849yes
161.77.1.x/24/277849yes
161.77.1.x/24/267849yes
161.77.1.x/24/257849yes
161.77.1.x/24/247849yes
161.77.0.x/24/237849yes
161.77.3.x/24/227849yes
161.77.5.x/24/217849yes
161.77.9.x/24/207849yes
161.77.17.x/24/197849yes
161.77.33.x/24/187849yes
161.77.65.x/24/177849yes
161.77.129.x/24/167849yes
161.76.1.x/24/15786no
161.79.1.x/24/142715no
161.73.1.x/24/13786no
161.69.1.x/24/12UNROUTEDno
161.93.1.x/24/11UNROUTEDno
161.109.1.x/24/1017327no
161.13.1.x/24/914351no
161.205.1.x/24/8UNROUTEDno

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 2 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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