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Session Report

Summary:
Test run at: 2020-08-18 13:38:28 GMT
Client Prefix (v4): 168.1.80.x/24
Client AS (v4): 36351 (SOFTLAYER)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none
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 Adjacent Netblock Testing:

Your host (168.1.80.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
168.1.80.x/24/3136351rewritten
168.1.80.x/24/3036351rewritten
168.1.80.x/24/2936351natblock
168.1.80.x/24/2836351rewritten
168.1.80.x/24/2736351rewritten
168.1.80.x/24/2636351rewritten
168.1.80.x/24/2536351rewritten
168.1.80.x/24/2436351rewritten
168.1.81.x/24/2336351rewritten
168.1.82.x/24/2236351rewritten
168.1.84.x/24/2136351rewritten
168.1.88.x/24/2036351rewritten
168.1.64.x/24/1936351rewritten
168.1.112.x/24/1836351rewritten
168.1.16.x/24/1736351rewritten
168.1.208.x/24/1636351rewritten
168.0.80.x/24/15265225rewritten
168.3.80.x/24/148rewritten
168.5.80.x/24/138rewritten
168.9.80.x/24/123480rewritten
168.17.80.x/24/113479rewritten
168.33.80.x/24/101761rewritten
168.65.80.x/24/9UNROUTEDrewritten
168.129.80.x/24/8UNROUTEDrewritten

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.
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 2 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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