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Session Report

Summary:
Test run at: 2020-02-03 12:03:34 GMT
Client Prefix (v4): 185.26.198.x/24
Client AS (v4): 60432 (ASN-forisp)
IPv4 Probes: 75
Client Prefix (v6): 2a00:8c60:xx::/40
Client AS (v6): 60432 (ASN-forisp)
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /8
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 (185.26.198.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.26.198.x/24/3160432yes
185.26.198.x/24/3060432natblock
185.26.198.x/24/2960432yes
185.26.198.x/24/2860432yes
185.26.198.x/24/2760432yes
185.26.198.x/24/2660432yes
185.26.198.x/24/2560432yes
185.26.198.x/24/2460432yes
185.26.199.x/24/2360432yes
185.26.196.x/24/2260706yes
185.26.194.x/24/2160720yes
185.26.206.x/24/2015599yes
185.26.214.x/24/19UNROUTEDnatblock
185.26.230.x/24/1834922yes
185.26.134.x/24/1721412yes
185.26.70.x/24/1647524yes
185.27.198.x/24/1560688yes
185.24.198.x/24/14197064yes
185.30.198.x/24/1350129yes
185.18.198.x/24/12198432yes
185.10.198.x/24/1161340yes
185.58.198.x/24/10201942yes
185.90.198.x/24/934343yes
185.154.198.x/24/848427yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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 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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