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Session Report

Summary:
Test run at: 2022-09-06 20:42:08 GMT
Client Prefix (v4): 37.44.238.x/24
Client AS (v4): 49434 (HARMONYHOSTING-AS)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
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 (37.44.238.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
37.44.238.x/24/3149434yes
37.44.238.x/24/3049434yes
37.44.238.x/24/2949434yes
37.44.238.x/24/2849434yes
37.44.238.x/24/2749434yes
37.44.238.x/24/2649434yes
37.44.238.x/24/2549434yes
37.44.238.x/24/2449434yes
37.44.239.x/24/2334534yes
37.44.236.x/24/2249434yes
37.44.234.x/24/21209912no
37.44.230.x/24/20210892no
37.44.254.x/24/1935830no
37.44.206.x/24/1813189no
37.44.174.x/24/1716234no
37.44.110.x/24/166697no
37.45.238.x/24/156697no
37.46.238.x/24/1413188no
37.40.238.x/24/1328885no
37.36.238.x/24/1242961no
37.60.238.x/24/11UNROUTEDno
37.12.238.x/24/103352no
37.108.238.x/24/95617no
37.172.238.x/24/851207no

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
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 8 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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