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Session Report

Summary:
Test run at: 2023-03-21 08:05:07 GMT
Client Prefix (v4): 185.127.111.x/24
Client AS (v4): 203623 (zerospace)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 received
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 (185.127.111.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.127.111.x/24/31203623yes
185.127.111.x/24/30203623yes
185.127.111.x/24/29203623natblock
185.127.111.x/24/28203623yes
185.127.111.x/24/27203623yes
185.127.111.x/24/26203623natblock
185.127.111.x/24/25203623natblock
185.127.111.x/24/24203623yes
185.127.110.x/24/23203623yes
185.127.109.x/24/22203623yes
185.127.107.x/24/21203681yes
185.127.103.x/24/20UNROUTEDnatblock
185.127.127.x/24/19202987yes
185.127.79.x/24/18203443yes
185.127.47.x/24/17204085yes
185.127.239.x/24/16203612yes
185.126.111.x/24/1560111yes
185.125.111.x/24/1443927yes
185.123.111.x/24/13203813yes
185.119.111.x/24/125413yes
185.111.111.x/24/1149025yes
185.95.111.x/24/10199775yes
185.63.111.x/24/947329yes
185.255.111.x/24/8786yes

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)
natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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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