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Session Report

Summary:
Test run at: 2020-09-06 16:26:46 GMT
Client Prefix (v4): 212.103.50.x/24
Client AS (v4): 9009 (M247)
IPv4 Probes: 75
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 (212.103.50.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
212.103.50.x/24/319009natblock
212.103.50.x/24/309009natblock
212.103.50.x/24/299009natblock
212.103.50.x/24/289009natblock
212.103.50.x/24/279009natblock
212.103.50.x/24/269009natblock
212.103.50.x/24/259009natblock
212.103.50.x/24/249009natblock
212.103.51.x/24/239009natblock
212.103.48.x/24/229009natblock
212.103.54.x/24/21207083natblock
212.103.58.x/24/20197328natblock
212.103.34.x/24/19209891natblock
212.103.18.x/24/1812670natblock
212.103.114.x/24/1731585natblock
212.103.178.x/24/168452natblock
212.102.50.x/24/1560068natblock
212.101.50.x/24/1425054natblock
212.99.50.x/24/1312670natblock
212.111.50.x/24/1215830natblock
212.119.50.x/24/1151223natblock
212.71.50.x/24/1034397natblock
212.39.50.x/24/9UNROUTEDnatblock
212.231.50.x/24/815704natblock

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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