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Session Report

Summary:
Test run at: 2022-03-26 23:34:47 GMT
Client Prefix (v4): 212.30.37.x/24
Client AS (v4): 137409 (GSLNETWORKS-AS-AP)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (212.30.37.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
212.30.37.x/24/31137409sendto
212.30.37.x/24/30137409sendto
212.30.37.x/24/29137409sendto
212.30.37.x/24/28137409sendto
212.30.37.x/24/27137409sendto
212.30.37.x/24/26137409sendto
212.30.37.x/24/25137409sendto
212.30.37.x/24/24137409sendto
212.30.36.x/24/23137409sendto
212.30.39.x/24/2220860sendto
212.30.33.x/24/21206092sendto
212.30.45.x/24/20208485sendto
212.30.53.x/24/1941956natblock
212.30.5.x/24/188680sendto
212.30.101.x/24/1712626sendto
212.30.165.x/24/168359sendto
212.31.37.x/24/1512386sendto
212.28.37.x/24/1412292sendto
212.26.37.x/24/138895sendto
212.22.37.x/24/123329sendto
212.14.37.x/24/118286sendto
212.62.37.x/24/1013091sendto
212.94.37.x/24/928859sendto
212.158.37.x/24/81273sendto

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.
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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