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Session Report

Summary:
Test run at: 2023-01-06 20:35:35 GMT
Client Prefix (v4): 170.82.180.x/24
Client AS (v4): 266445
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
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 (170.82.180.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
170.82.180.x/24/31266445yes
170.82.180.x/24/30266445yes
170.82.180.x/24/29266445yes
170.82.180.x/24/28266445yes
170.82.180.x/24/27266445yes
170.82.180.x/24/26266445yes
170.82.180.x/24/25266445yes
170.82.180.x/24/24266445yes
170.82.181.x/24/23266445yes
170.82.182.x/24/22266445yes
170.82.176.x/24/2128343rewritten
170.82.188.x/24/2027901rewritten
170.82.164.x/24/1952670rewritten
170.82.148.x/24/18263649rewritten
170.82.244.x/24/17264858rewritten
170.82.52.x/24/16266434rewritten
170.83.180.x/24/15263478rewritten
170.80.180.x/24/14262777rewritten
170.86.180.x/24/137726rewritten
170.90.180.x/24/1264208rewritten
170.66.180.x/24/1111993rewritten
170.114.180.x/24/1030103rewritten
170.18.180.x/24/9UNROUTEDrewritten
170.210.180.x/24/842rewritten

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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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