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Session Report

Summary:
Test run at: 2023-07-25 18:07:23 GMT
Client Prefix (v4): 168.197.144.x/24
Client AS (v4): 265487
IPv4 Probes: 60
Client Prefix (v6): 2804:34e8:20xx::/40
Client AS (v6): 265487
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 (168.197.144.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
168.197.144.x/24/31265487sendto
168.197.144.x/24/30265487yes
168.197.144.x/24/29265487sendto
168.197.144.x/24/28265487yes
168.197.144.x/24/27265487sendto
168.197.144.x/24/26265487yes
168.197.144.x/24/25265487sendto
168.197.144.x/24/24265487sendto
168.197.145.x/24/23265487yes
168.197.146.x/24/22265487yes
168.197.148.x/24/21265483natblock
168.197.152.x/24/20265484sendto
168.197.128.x/24/1952864natblock
168.197.176.x/24/18265488sendto
168.197.208.x/24/17264779sendto
168.197.16.x/24/1652947sendto
168.196.144.x/24/15263994natblock
168.199.144.x/24/14UNROUTEDsendto
168.193.144.x/24/13UNROUTEDsendto
168.205.144.x/24/12263140natblock
168.213.144.x/24/11UNROUTEDsendto
168.229.144.x/24/10UNROUTEDnatblock
168.133.144.x/24/9UNROUTEDnatblock
168.69.144.x/24/8UNROUTEDsendto

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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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