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Session Report

Summary:
Test run at: 2021-06-14 20:50:04 GMT
Client Prefix (v4): 200.25.50.x/24
Client AS (v4): 7195
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 (200.25.50.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.25.50.x/24/317195natblock
200.25.50.x/24/307195natblock
200.25.50.x/24/297195natblock
200.25.50.x/24/287195natblock
200.25.50.x/24/277195natblock
200.25.50.x/24/267195natblock
200.25.50.x/24/257195natblock
200.25.50.x/24/247195natblock
200.25.51.x/24/23UNROUTEDnatblock
200.25.48.x/24/227195natblock
200.25.54.x/24/217195natblock
200.25.58.x/24/207195natblock
200.25.34.x/24/197195natblock
200.25.18.x/24/18UNROUTEDnatblock
200.25.114.x/24/17UNROUTEDnatblock
200.25.178.x/24/1614522natblock
200.24.50.x/24/1513489natblock
200.27.50.x/24/146429natblock
200.29.50.x/24/137418natblock
200.17.50.x/24/121916natblock
200.9.50.x/24/1111830natblock
200.57.50.x/24/108151natblock
200.89.50.x/24/97418natblock
200.153.50.x/24/810429natblock

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.
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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