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Session Report

Summary:
Test run at: 2020-03-18 03:02:18 GMT
Client Prefix (v4): 170.150.127.x/24
Client AS (v4): 265033
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /22
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 (170.150.127.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
170.150.127.x/24/31265033yes
170.150.127.x/24/30265033yes
170.150.127.x/24/29265033yes
170.150.127.x/24/28265033yes
170.150.127.x/24/27265033yes
170.150.127.x/24/26265033yes
170.150.127.x/24/25265033yes
170.150.127.x/24/24265033yes
170.150.126.x/24/23265033yes
170.150.125.x/24/22265033yes
170.150.123.x/24/2128098natblock
170.150.119.x/24/20264726natblock
170.150.111.x/24/1961651natblock
170.150.95.x/24/18265030natblock
170.150.63.x/24/177049natblock
170.150.255.x/24/1661663natblock
170.151.127.x/24/15UNROUTEDnatblock
170.148.127.x/24/1417929natblock
170.146.127.x/24/1314299natblock
170.158.127.x/24/1246158natblock
170.134.127.x/24/1123148natblock
170.182.127.x/24/10UNROUTEDnatblock
170.214.127.x/24/9UNROUTEDnatblock
170.22.127.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 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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