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Session Report

Summary:
Test run at: 2020-09-08 17:48:28 GMT
Client Prefix (v4): 37.120.156.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 /27
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 (37.120.156.x/24) can spoof 31 neighboring addresses (within your /27 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
37.120.156.x/24/319009yes
37.120.156.x/24/309009natblock
37.120.156.x/24/299009yes
37.120.156.x/24/289009yes
37.120.156.x/24/279009yes
37.120.156.x/24/269009natblock
37.120.156.x/24/259009natblock
37.120.156.x/24/249009natblock
37.120.157.x/24/239009natblock
37.120.158.x/24/229009natblock
37.120.152.x/24/219009natblock
37.120.148.x/24/209009natblock
37.120.140.x/24/199009natblock
37.120.188.x/24/18197540natblock
37.120.220.x/24/17UNROUTEDnatblock
37.120.28.x/24/1620880natblock
37.121.156.x/24/1534400natblock
37.122.156.x/24/1457862natblock
37.124.156.x/24/1335819natblock
37.112.156.x/24/1251035natblock
37.104.156.x/24/1125019natblock
37.88.156.x/24/103320natblock
37.56.156.x/24/925019natblock
37.248.156.x/24/88374natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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 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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