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Session Report

Summary:
Test run at: 2023-02-03 12:55:41 GMT
Client Prefix (v4): 193.142.146.x/24
Client AS (v4): 208046 (HostSlick-Germany)
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 /23
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 (193.142.146.x/24) can spoof 511 neighboring addresses (within your /23 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
193.142.146.x/24/31208046yes
193.142.146.x/24/30208046yes
193.142.146.x/24/29208046yes
193.142.146.x/24/28208046yes
193.142.146.x/24/27208046yes
193.142.146.x/24/26208046yes
193.142.146.x/24/25208046yes
193.142.146.x/24/24208046yes
193.142.147.x/24/23208046yes
193.142.144.x/24/22197793no
193.142.150.x/24/211759no
193.142.154.x/24/20206894no
193.142.130.x/24/1942687no
193.142.178.x/24/18198024no
193.142.210.x/24/1742643no
193.142.18.x/24/1664267no
193.143.146.x/24/15UNROUTEDno
193.140.146.x/24/148517no
193.138.146.x/24/1313188no
193.134.146.x/24/12UNROUTEDno
193.158.146.x/24/113320no
193.174.146.x/24/10680no
193.206.146.x/24/9137no
193.14.146.x/24/81257no

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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