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Session Report

Summary:
Test run at: 2017-09-01 08:36:26 GMT
Client Prefix (v4): 185.156.60.x/24
Client AS (v4): 202640 (snfcc)
IPv4 Probes: 132
Client Prefix (v6): 2a07:9b07:11xx::/40
Client AS (v6): 202640 (snfcc)
IPv6 Probes: 86
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
Largest spoofable neighbor prefix length nonenone
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 (185.156.60.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.156.60.x/24/31202640natblock
185.156.60.x/24/30202640natblock
185.156.60.x/24/29202640natblock
185.156.60.x/24/28202640natblock
185.156.60.x/24/27202640natblock
185.156.60.x/24/26202640natblock
185.156.60.x/24/25202640natblock
185.156.60.x/24/24202640natblock
185.156.61.x/24/23202640natblock
185.156.62.x/24/22202640natblock
185.156.56.x/24/21202598natblock
185.156.52.x/24/20UNROUTEDnatblock
185.156.44.x/24/19UNROUTEDnatblock
185.156.28.x/24/18197328natblock
185.156.124.x/24/17202716natblock
185.156.188.x/24/16206405natblock
185.157.60.x/24/1515426natblock
185.158.60.x/24/1459469natblock
185.152.60.x/24/1357970natblock
185.148.60.x/24/1242459natblock
185.140.60.x/24/116739natblock
185.188.60.x/24/103356natblock
185.220.60.x/24/9UNROUTEDnatblock
185.28.60.x/24/843260natblock

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.
IPv6 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.

  

  
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a07:9b07:11xx::/40/120202640natblock
2a07:9b07:11xx::/40/112202640natblock
2a07:9b07:11xx::/40/104202640natblock
2a07:9b07:11xx::/40/96202640natblock
2a07:9b07:11xx::/40/88202640natblock
2a07:9b07:11xx::/40/80202640natblock
2a07:9b07:11xx::/40/72202640natblock
2a07:9b07:11xx::/40/64202640natblock
2a07:9b07:11xx::/40/56202640natblock
2a07:9b07:11xx::/40/48202640natblock
2a07:9b07:11xx::/40/40202640natblock
2a07:9b07:91xx::/40/32202640natblock
2a07:9b87:11xx::/40/24UNROUTEDnatblock
2a07:1b07:11xx::/40/16UNROUTEDnatblock

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.
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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