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Session Report

Summary:
Test run at: 2020-09-02 16:21:59 GMT
Client Prefix (v4): 174.127.114.x/24
Client AS (v4): 13213 (UK2NET-AS)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
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 (174.127.114.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
174.127.114.x/24/3113213rewritten
174.127.114.x/24/3013213rewritten
174.127.114.x/24/2913213rewritten
174.127.114.x/24/2813213rewritten
174.127.114.x/24/2713213rewritten
174.127.114.x/24/2613213rewritten
174.127.114.x/24/2513213rewritten
174.127.114.x/24/2413213rewritten
174.127.115.x/24/2313213rewritten
174.127.112.x/24/2229854rewritten
174.127.118.x/24/2129854rewritten
174.127.122.x/24/2032780rewritten
174.127.98.x/24/19UNROUTEDrewritten
174.127.82.x/24/1836351rewritten
174.127.50.x/24/1714265rewritten
174.127.242.x/24/1654858rewritten
174.126.114.x/24/1511492rewritten
174.125.114.x/24/14209rewritten
174.123.114.x/24/1336351rewritten
174.119.114.x/24/12812rewritten
174.111.114.x/24/1111426rewritten
174.95.114.x/24/10577rewritten
174.63.114.x/24/97922rewritten
174.255.114.x/24/822394rewritten

Meaning of status in Received column:

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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