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Session Report

Summary:
Test run at: 2023-02-13 13:32:58 GMT
Client Prefix (v4): 195.158.2.x/24
Client AS (v4): 8193 (BRM-AS)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none
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 (195.158.2.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
195.158.2.x/24/318193natblock
195.158.2.x/24/308193natblock
195.158.2.x/24/298193natblock
195.158.2.x/24/288193rewritten
195.158.2.x/24/278193rewritten
195.158.2.x/24/268193rewritten
195.158.2.x/24/258193natblock
195.158.2.x/24/248193rewritten
195.158.3.x/24/238193natblock
195.158.0.x/24/228193rewritten
195.158.6.x/24/218193natblock
195.158.10.x/24/208193rewritten
195.158.18.x/24/198193rewritten
195.158.34.x/24/188319rewritten
195.158.66.x/24/1715735natblock
195.158.130.x/24/163209natblock
195.159.2.x/24/152116rewritten
195.156.2.x/24/141759natblock
195.154.2.x/24/1312876rewritten
195.150.2.x/24/128323rewritten
195.142.2.x/24/11199484natblock
195.190.2.x/24/103320natblock
195.222.2.x/24/93327rewritten
195.30.2.x/24/85539rewritten

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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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