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Session Report

Summary:
Test run at: 2019-03-18 12:39:03 GMT
Client Prefix (v4): 185.169.255.x/24
Client AS (v4): 136787 (TEFINCOMSA-AS-AP)
IPv4 Probes: 116
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
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.
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 (185.169.255.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.169.255.x/24/31136787natblock
185.169.255.x/24/30136787natblock
185.169.255.x/24/29136787natblock
185.169.255.x/24/28136787natblock
185.169.255.x/24/27136787natblock
185.169.255.x/24/26136787natblock
185.169.255.x/24/25136787natblock
185.169.255.x/24/24136787natblock
185.169.254.x/24/2332780natblock
185.169.253.x/24/22206264natblock
185.169.251.x/24/21UNROUTEDnatblock
185.169.247.x/24/20206984natblock
185.169.239.x/24/1956911natblock
185.169.223.x/24/1834458natblock
185.169.191.x/24/17UNROUTEDnatblock
185.169.127.x/24/16199163natblock
185.168.255.x/24/1518708natblock
185.171.255.x/24/1461161natblock
185.173.255.x/24/13UNROUTEDnatblock
185.161.255.x/24/12200918natblock
185.185.255.x/24/1143409natblock
185.137.255.x/24/10UNROUTEDnatblock
185.233.255.x/24/9UNROUTEDnatblock
185.41.255.x/24/8199321natblock

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.

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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