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Session Report

Summary:
Test run at: 2019-12-27 15:29:40 GMT
Client Prefix (v4): 45.239.44.x/24
Client AS (v4): 266858
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
Largest spoofable neighbor prefix length none

Meaning of result status in column:

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 (45.239.44.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.239.44.x/24/31266858rewritten
45.239.44.x/24/30266858natblock
45.239.44.x/24/29266858rewritten
45.239.44.x/24/28266858rewritten
45.239.44.x/24/27266858rewritten
45.239.44.x/24/26266858rewritten
45.239.44.x/24/25266858rewritten
45.239.44.x/24/24266858rewritten
45.239.45.x/24/23266858rewritten
45.239.46.x/24/22266858rewritten
45.239.40.x/24/21268375rewritten
45.239.36.x/24/20266871rewritten
45.239.60.x/24/19266854rewritten
45.239.12.x/24/18268346rewritten
45.239.108.x/24/17266855rewritten
45.239.172.x/24/16268373rewritten
45.238.44.x/24/15268312rewritten
45.237.44.x/24/14266814rewritten
45.235.44.x/24/13268200rewritten
45.231.44.x/24/12265546rewritten
45.255.44.x/24/11UNROUTEDrewritten
45.207.44.x/24/10UNROUTEDrewritten
45.175.44.x/24/9268937rewritten
45.111.44.x/24/837069rewritten

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 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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