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Session Report

Summary:
Test run at: 2017-09-15 15:14:31 GMT
Client Prefix (v4): 185.156.123.x/24
Client AS (v4): 202719 (PRANET)
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 /24
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 (185.156.123.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.156.123.x/24/31202719yes
185.156.123.x/24/30202719yes
185.156.123.x/24/29202719yes
185.156.123.x/24/28202719yes
185.156.123.x/24/27202719yes
185.156.123.x/24/26202719yes
185.156.123.x/24/25202719yes
185.156.123.x/24/24202719yes
185.156.122.x/24/23202719natblock
185.156.121.x/24/22202719natblock
185.156.127.x/24/21202716natblock
185.156.115.x/24/20UNROUTEDnatblock
185.156.107.x/24/19UNROUTEDnatblock
185.156.91.x/24/18202726natblock
185.156.59.x/24/17202598natblock
185.156.251.x/24/16202676natblock
185.157.123.x/24/15207071natblock
185.158.123.x/24/1461317natblock
185.152.123.x/24/13UNROUTEDnatblock
185.148.123.x/24/1239899natblock
185.140.123.x/24/11198414natblock
185.188.123.x/24/1043341natblock
185.220.123.x/24/9UNROUTEDnatblock
185.28.123.x/24/8UNROUTEDnatblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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 able to spoof routable, non-adjacent source addresses through the first 5 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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