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Session Report

Summary:
Test run at: 2023-02-20 18:46:54 GMT
Client Prefix (v4): 200.219.25.x/24
Client AS (v4): 270812
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /22
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 (200.219.25.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.219.25.x/24/31270812no
200.219.25.x/24/30270812no
200.219.25.x/24/29270812yes
200.219.25.x/24/28270812yes
200.219.25.x/24/27270812yes
200.219.25.x/24/26270812yes
200.219.25.x/24/25270812yes
200.219.25.x/24/24270812yes
200.219.24.x/24/23270812yes
200.219.27.x/24/22270812yes
200.219.29.x/24/21270826no
200.219.17.x/24/20270810no
200.219.9.x/24/19270805no
200.219.57.x/24/18270817no
200.219.89.x/24/178167no
200.219.153.x/24/1611835no
200.218.25.x/24/1510362no
200.217.25.x/24/147738no
200.223.25.x/24/137738no
200.211.25.x/24/124230no
200.203.25.x/24/118167no
200.251.25.x/24/104230no
200.155.25.x/24/926592no
200.91.25.x/24/87004no

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 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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