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Session Report

Summary:
Test run at: 2021-08-08 20:14:40 GMT
Client Prefix (v4): 51.79.186.x/24
Client AS (v4): 16276 (OVH)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /27

Meaning of result status in column:

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.

IPv4 Adjacent Netblock Testing:

Your host (51.79.186.x/24) can spoof 31 neighboring addresses (within your /27 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
51.79.186.x/24/3116276yes
51.79.186.x/24/3016276yes
51.79.186.x/24/2916276no
51.79.186.x/24/2816276yes
51.79.186.x/24/2716276yes
51.79.186.x/24/2616276no
51.79.186.x/24/2516276no
51.79.186.x/24/2416276no
51.79.187.x/24/2316276no
51.79.184.x/24/2216276no
51.79.190.x/24/2116276no
51.79.178.x/24/2016276no
51.79.170.x/24/1916276no
51.79.154.x/24/1816276no
51.79.250.x/24/1716276no
51.79.58.x/24/1616276no
51.78.186.x/24/15UNROUTEDno
51.77.186.x/24/1416276no
51.75.186.x/24/1316276no
51.71.186.x/24/12UNROUTEDno
51.95.186.x/24/11UNROUTEDno
51.111.186.x/24/10UNROUTEDno
51.15.186.x/24/912876no
51.207.186.x/24/8UNROUTEDno

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 1 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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