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Session Report

Summary:
Test run at: 2017-08-22 23:20:00 GMT
Client Prefix (v4): 165.237.199.x/24
Client AS (v4): 3456 (TWC-3456-IT)
IPv4 Probes: 131
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
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.

IPv4 Adjacent Netblock Testing:

Your host (165.237.199.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
165.237.199.x/24/313456natblock
165.237.199.x/24/303456natblock
165.237.199.x/24/293456natblock
165.237.199.x/24/283456natblock
165.237.199.x/24/273456natblock
165.237.199.x/24/263456natblock
165.237.199.x/24/253456natblock
165.237.199.x/24/243456natblock
165.237.198.x/24/233456natblock
165.237.197.x/24/223456natblock
165.237.195.x/24/213456natblock
165.237.207.x/24/203456natblock
165.237.215.x/24/193456natblock
165.237.231.x/24/183456natblock
165.237.135.x/24/173456natblock
165.237.71.x/24/163456natblock
165.236.199.x/24/15UNROUTEDnatblock
165.239.199.x/24/1411663natblock
165.233.199.x/24/137020natblock
165.229.199.x/24/1223980natblock
165.253.199.x/24/11UNROUTEDnatblock
165.205.199.x/24/10UNROUTEDnatblock
165.173.199.x/24/9UNROUTEDnatblock
165.109.199.x/24/8UNROUTEDnatblock

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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