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Session Report

Summary:
Test run at: 2021-02-01 17:39:39 GMT
Client Prefix (v4): 193.238.53.x/24
Client AS (v4): 29680 (VOZTELECOM)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
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 (193.238.53.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
193.238.53.x/24/3129680rewritten
193.238.53.x/24/3029680rewritten
193.238.53.x/24/2929680rewritten
193.238.53.x/24/2829680rewritten
193.238.53.x/24/2729680rewritten
193.238.53.x/24/2629680rewritten
193.238.53.x/24/2529680rewritten
193.238.53.x/24/2429680rewritten
193.238.52.x/24/2329680rewritten
193.238.55.x/24/2229680rewritten
193.238.49.x/24/2147111rewritten
193.238.61.x/24/2034624rewritten
193.238.37.x/24/1929436rewritten
193.238.21.x/24/1825143rewritten
193.238.117.x/24/17212863rewritten
193.238.181.x/24/1634844rewritten
193.239.53.x/24/1547902rewritten
193.236.53.x/24/14199155rewritten
193.234.53.x/24/13UNROUTEDrewritten
193.230.53.x/24/123233rewritten
193.254.53.x/24/11209686rewritten
193.206.53.x/24/10137rewritten
193.174.53.x/24/9680rewritten
193.110.53.x/24/8UNROUTEDrewritten

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.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 10 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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