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Session Report

Summary:
Test run at: 2023-01-05 15:21:40 GMT
Client Prefix (v4): 41.71.84.x/24
Client AS (v4): 37053 (RSAWEB-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 (41.71.84.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
41.71.84.x/24/3137053sendto
41.71.84.x/24/3037053sendto
41.71.84.x/24/2937053sendto
41.71.84.x/24/2837053sendto
41.71.84.x/24/2737053sendto
41.71.84.x/24/2637053sendto
41.71.84.x/24/2537053sendto
41.71.84.x/24/2437053sendto
41.71.85.x/24/2337053sendto
41.71.86.x/24/2237053rewritten
41.71.80.x/24/2137053sendto
41.71.92.x/24/2037053sendto
41.71.68.x/24/1937053sendto
41.71.116.x/24/1837053sendto
41.71.20.x/24/1737053sendto
41.71.212.x/24/16203345sendto
41.70.84.x/24/1537215sendto
41.69.84.x/24/1424835sendto
41.67.84.x/24/1324863sendto
41.79.84.x/24/1236974sendto
41.87.84.x/24/1137248sendto
41.103.84.x/24/1036947sendto
41.7.84.x/24/929975sendto
41.199.84.x/24/8UNROUTEDsendto

Meaning of status in Received column:

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.
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 able to spoof routable, non-adjacent source addresses through the first 1 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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